142743040 has 160 divisors (see below), whose sum is σ = 386252064. Its totient is φ = 50135040.

The previous prime is 142743019. The next prime is 142743049. The reversal of 142743040 is 40347241.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 142742996 and 142743014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142743049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041852 + ... + 1041988.

Almost surely, 2^142743040 is an apocalyptic number.

142743040 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 142743040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193126032).

142743040 is an abundant number, since it is smaller than the sum of its proper divisors (243509024).

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

142743040 is a wasteful number, since it uses less digits than its factorization.

142743040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 142743040 is about 11947.5118748633. The cubic root of 142743040 is about 522.6187424243.

The spelling of 142743040 in words is "one hundred forty-two million, seven hundred forty-three thousand, forty".