142438758 has 32 divisors (see below), whose sum is σ = 355173120. Its totient is φ = 36996960.

The previous prime is 142438757. The next prime is 142438783. The reversal of 142438758 is 857834241.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142438757) 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, 153693 + ... + 154616.

It is an arithmetic number, because the mean of its divisors is an integer number (11099160).

Almost surely, 2^142438758 is an apocalyptic number.

142438758 is an abundant number, since it is smaller than the sum of its proper divisors (212734362).

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

142438758 is a wasteful number, since it uses less digits than its factorization.

142438758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308332.

The product of its digits is 215040, while the sum is 42.

The square root of 142438758 is about 11934.7709655443. The cubic root of 142438758 is about 522.2471268608.

The spelling of 142438758 in words is "one hundred forty-two million, four hundred thirty-eight thousand, seven hundred fifty-eight".