13121442754 has 24 divisors (see below), whose sum is σ = 22935357900. Its totient is φ = 5613705216.

The previous prime is 13121442727. The next prime is 13121442773. The reversal of 13121442754 is 45724412131.

It can be written as a sum of positive squares in 2 ways, for example, as 10717011529 + 2404431225 = 103523^2 + 49035^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59479 + ... + 172570.

Almost surely, 2^13121442754 is an apocalyptic number.

13121442754 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

13121442754 is a deficient number, since it is larger than the sum of its proper divisors (9813915146).

13121442754 is a wasteful number, since it uses less digits than its factorization.

13121442754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232642 (or 232635 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

Adding to 13121442754 its reverse (45724412131), we get a palindrome (58845854885).

The spelling of 13121442754 in words is "thirteen billion, one hundred twenty-one million, four hundred forty-two thousand, seven hundred fifty-four".