84609154242 has 24 divisors (see below), whose sum is σ = 183363470316. Its totient is φ = 28196338176.

The previous prime is 84609154183. The next prime is 84609154249. The reversal of 84609154242 is 24245190648.

It is a happy number.

84609154242 is a `hidden beast` number, since 8 + 4 + 60 + 9 + 1 + 542 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68753559681 + 15855594561 = 262209^2 + 125919^2 .

It is not an unprimeable number, because it can be changed into a prime (84609154249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481423 + ... + 633234.

Almost surely, 2^84609154242 is an apocalyptic number.

84609154242 is an abundant number, since it is smaller than the sum of its proper divisors (98754316074).

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

84609154242 is a wasteful number, since it uses less digits than its factorization.

84609154242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118882 (or 1118879 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 84609154242 in words is "eighty-four billion, six hundred nine million, one hundred fifty-four thousand, two hundred forty-two".