142263540 has 120 divisors (see below), whose sum is σ = 450244872. Its totient is φ = 37601280.

The previous prime is 142263523. The next prime is 142263551. The reversal of 142263540 is 45362241.

142263540 is a `hidden beast` number, since 1 + 4 + 22 + 635 + 4 + 0 = 666.

142263540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45319824 + 96943716 = 6732^2 + 9846^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221620 + ... + 222260.

Almost surely, 2^142263540 is an apocalyptic number.

142263540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142263540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225122436).

142263540 is an abundant number, since it is smaller than the sum of its proper divisors (307981332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142263540 is a wasteful number, since it uses less digits than its factorization.

142263540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 142263540 is about 11927.4280546981. The cubic root of 142263540 is about 522.0328952714.

It can be divided in two parts, 14226 and 3540, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 142263540 in words is "one hundred forty-two million, two hundred sixty-three thousand, five hundred forty".