121872074 has 4 divisors (see below), whose sum is σ = 182808114. Its totient is φ = 60936036.

The previous prime is 121872071. The next prime is 121872077. The reversal of 121872074 is 470278121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (121872071) and next prime (121872077).

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 60171049 = 7855^2 + 7757^2 .

It is a super-2 number, since 2×121872074² = 29705604842122952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121872074.

It is not an unprimeable number, because it can be changed into a prime (121872071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30468017 + ... + 30468020.

Almost surely, 2^121872074 is an apocalyptic number.

121872074 is a deficient number, since it is larger than the sum of its proper divisors (60936040).

121872074 is an equidigital number, since it uses as much as digits as its factorization.

121872074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60936039.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 121872074 is about 11039.5685604103. The cubic root of 121872074 is about 495.7941528974.

The spelling of 121872074 in words is "one hundred twenty-one million, eight hundred seventy-two thousand, seventy-four".