157284642 has 8 divisors (see below), whose sum is σ = 314569296. Its totient is φ = 52428212.

The previous prime is 157284637. The next prime is 157284643. The reversal of 157284642 is 246482751.

It is a sphenic number, since it is the product of 3 distinct primes.

157284642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 157284642.

It is not an unprimeable number, because it can be changed into a prime (157284643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13107048 + ... + 13107059.

It is an arithmetic number, because the mean of its divisors is an integer number (39321162).

Almost surely, 2^157284642 is an apocalyptic number.

157284642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

157284642 is a wasteful number, since it uses less digits than its factorization.

157284642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26214112.

The product of its digits is 107520, while the sum is 39.

The square root of 157284642 is about 12541.3173949151. The cubic root of 157284642 is about 539.7948946710.

The spelling of 157284642 in words is "one hundred fifty-seven million, two hundred eighty-four thousand, six hundred forty-two".