161502040242 has 32 divisors (see below), whose sum is σ = 359630428800. Its totient is φ = 53723462544.

The previous prime is 161502040229. The next prime is 161502040247. The reversal of 161502040242 is 242040205161.

161502040242 is a `hidden beast` number, since 1 + 615 + 0 + 2 + 0 + 4 + 0 + 2 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (161502040247) 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, 3044317 + ... + 3096912.

It is an arithmetic number, because the mean of its divisors is an integer number (11238450900).

Almost surely, 2^161502040242 is an apocalyptic number.

161502040242 is an abundant number, since it is smaller than the sum of its proper divisors (198128388558).

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

161502040242 is a wasteful number, since it uses less digits than its factorization.

161502040242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6141727 (or 6141721 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The spelling of 161502040242 in words is "one hundred sixty-one billion, five hundred two million, forty thousand, two hundred forty-two".