20120003154 has 64 divisors (see below), whose sum is σ = 45100296960. Its totient is φ = 6648480000.

The previous prime is 20120003077. The next prime is 20120003207. The reversal of 20120003154 is 45130002102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4409034 + ... + 4413594.

It is an arithmetic number, because the mean of its divisors is an integer number (704692140).

Almost surely, 2^20120003154 is an apocalyptic number.

20120003154 is an abundant number, since it is smaller than the sum of its proper divisors (24980293806).

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

20120003154 is a wasteful number, since it uses less digits than its factorization.

20120003154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5264 (or 5258 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 20120003154 its reverse (45130002102), we get a palindrome (65250005256).

The spelling of 20120003154 in words is "twenty billion, one hundred twenty million, three thousand, one hundred fifty-four".