20154115142 has 16 divisors (see below), whose sum is σ = 34553053440. Its totient is φ = 8636692488.

The previous prime is 20154115127. The next prime is 20154115153. The reversal of 20154115142 is 24151145102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110273 + ... + 229059.

It is an arithmetic number, because the mean of its divisors is an integer number (2159565840).

Almost surely, 2^20154115142 is an apocalyptic number.

20154115142 is a deficient number, since it is larger than the sum of its proper divisors (14398938298).

20154115142 is a wasteful number, since it uses less digits than its factorization.

20154115142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130915.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 20154115142 in words is "twenty billion, one hundred fifty-four million, one hundred fifteen thousand, one hundred forty-two".