121624407 has 12 divisors (see below), whose sum is σ = 176601984. Its totient is φ = 80657280.

The previous prime is 121624361. The next prime is 121624411. The reversal of 121624407 is 704426121.

121624407 is a `hidden beast` number, since 1 + 216 + 2 + 440 + 7 = 666.

It is not a de Polignac number, because 121624407 - 2⁶ = 121624343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121624427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33658 + ... + 37095.

It is an arithmetic number, because the mean of its divisors is an integer number (14716832).

Almost surely, 2^121624407 is an apocalyptic number.

121624407 is a deficient number, since it is larger than the sum of its proper divisors (54977577).

121624407 is a wasteful number, since it uses less digits than its factorization.

121624407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70950 (or 70947 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 121624407 is about 11028.3456148236. The cubic root of 121624407 is about 495.4580761158.

The spelling of 121624407 in words is "one hundred twenty-one million, six hundred twenty-four thousand, four hundred seven".