156542240106 has 36 divisors (see below), whose sum is σ = 394550342082. Its totient is φ = 44726354064.

The previous prime is 156542240081. The next prime is 156542240117. The reversal of 156542240106 is 601042245651.

156542240106 is a `hidden beast` number, since 1 + 5 + 6 + 542 + 2 + 4 + 0 + 106 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116867575881 + 39674664225 = 341859^2 + 199185^2 .

It is a super-3 number, since 3×156542240106³ (a number of 35 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 88741885 + ... + 88743648.

Almost surely, 2^156542240106 is an apocalyptic number.

156542240106 is an abundant number, since it is smaller than the sum of its proper divisors (238008101976).

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

156542240106 is a wasteful number, since it uses less digits than its factorization.

156542240106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177485555 (or 177485545 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 156542240106 its reverse (601042245651), we get a palindrome (757584485757).

The spelling of 156542240106 in words is "one hundred fifty-six billion, five hundred forty-two million, two hundred forty thousand, one hundred six".