157438842 has 32 divisors (see below), whose sum is σ = 343949760. Its totient is φ = 47646720.

The previous prime is 157438829. The next prime is 157438847. The reversal of 157438842 is 248834751.

157438842 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 157438794 and 157438803.

It is not an unprimeable number, because it can be changed into a prime (157438847) 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, 92148 + ... + 93840.

It is an arithmetic number, because the mean of its divisors is an integer number (10748430).

Almost surely, 2^157438842 is an apocalyptic number.

157438842 is an abundant number, since it is smaller than the sum of its proper divisors (186510918).

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

157438842 is a wasteful number, since it uses less digits than its factorization.

157438842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118.

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

The square root of 157438842 is about 12547.4635683870. The cubic root of 157438842 is about 539.9712398949.

The spelling of 157438842 in words is "one hundred fifty-seven million, four hundred thirty-eight thousand, eight hundred forty-two".