285615042 has 16 divisors (see below), whose sum is σ = 574534080. Its totient is φ = 94654352.

The previous prime is 285615041. The next prime is 285615067. The reversal of 285615042 is 240516582.

It is a junction number, because it is equal to n+sod(n) for n = 285614994 and 285615012.

It is not an unprimeable number, because it can be changed into a prime (285615041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136542 + ... + 138617.

It is an arithmetic number, because the mean of its divisors is an integer number (35908380).

Almost surely, 2^285615042 is an apocalyptic number.

285615042 is an abundant number, since it is smaller than the sum of its proper divisors (288919038).

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

285615042 is a wasteful number, since it uses less digits than its factorization.

285615042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275337.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 285615042 is about 16900.1491709393. The cubic root of 285615042 is about 658.5574877066.

The spelling of 285615042 in words is "two hundred eighty-five million, six hundred fifteen thousand, forty-two".