121276413 has 8 divisors (see below), whose sum is σ = 179668800. Its totient is φ = 80850924.

The previous prime is 121276399. The next prime is 121276427. The reversal of 121276413 is 314672121.

121276413 is a `hidden beast` number, since 1 + 2 + 12 + 7 + 641 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (121276399) and next prime (121276427).

It is not a de Polignac number, because 121276413 - 2⁸ = 121276157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4491719 = 121276413 / (1 + 2 + 1 + 2 + 7 + 6 + 4 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121276013) 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, 2245833 + ... + 2245886.

It is an arithmetic number, because the mean of its divisors is an integer number (22458600).

Almost surely, 2^121276413 is an apocalyptic number.

It is an amenable number.

121276413 is a deficient number, since it is larger than the sum of its proper divisors (58392387).

121276413 is an equidigital number, since it uses as much as digits as its factorization.

121276413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491728 (or 4491722 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 121276413 is about 11012.5570600111. The cubic root of 121276413 is about 494.9850867867.

The spelling of 121276413 in words is "one hundred twenty-one million, two hundred seventy-six thousand, four hundred thirteen".