155994024742 has 16 divisors (see below), whose sum is σ = 239296318272. Its totient is φ = 76246358760.

The previous prime is 155994024721. The next prime is 155994024749. The reversal of 155994024742 is 247420499551.

It is a self number, because there is not a number n which added to its sum of digits gives 155994024742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155994024749) 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, 4425708 + ... + 4460815.

It is an arithmetic number, because the mean of its divisors is an integer number (14956019892).

Almost surely, 2^155994024742 is an apocalyptic number.

155994024742 is a deficient number, since it is larger than the sum of its proper divisors (83302293530).

155994024742 is a wasteful number, since it uses less digits than its factorization.

155994024742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8886723.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 155994024742 in words is "one hundred fifty-five billion, nine hundred ninety-four million, twenty-four thousand, seven hundred forty-two".