142544340 has 144 divisors (see below), whose sum is σ = 464520000. Its totient is φ = 36286272.

The previous prime is 142544333. The next prime is 142544341. The reversal of 142544340 is 43445241.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142544341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285411 + ... + 285909.

Almost surely, 2^142544340 is an apocalyptic number.

142544340 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 142544340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232260000).

142544340 is an abundant number, since it is smaller than the sum of its proper divisors (321975660).

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

142544340 is a wasteful number, since it uses less digits than its factorization.

142544340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 142544340 is about 11939.1934400947. The cubic root of 142544340 is about 522.3761326607.

Adding to 142544340 its reverse (43445241), we get a palindrome (185989581).

Subtracting from 142544340 its reverse (43445241), we obtain a palindrome (99099099).

It can be divided in two parts, 142544 and 340, that added together give a square (142884 = 378²).

The spelling of 142544340 in words is "one hundred forty-two million, five hundred forty-four thousand, three hundred forty".