20151534242 has 8 divisors (see below), whose sum is σ = 34545487296. Its totient is φ = 8636371812.

The previous prime is 20151534211. The next prime is 20151534251. The reversal of 20151534242 is 24243515102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719697638 + ... + 719697665.

It is an arithmetic number, because the mean of its divisors is an integer number (4318185912).

Almost surely, 2^20151534242 is an apocalyptic number.

20151534242 is a deficient number, since it is larger than the sum of its proper divisors (14393953054).

20151534242 is a wasteful number, since it uses less digits than its factorization.

20151534242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439395312.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 20151534242 in words is "twenty billion, one hundred fifty-one million, five hundred thirty-four thousand, two hundred forty-two".