121625740 has 12 divisors (see below), whose sum is σ = 255414096. Its totient is φ = 48650288.

The previous prime is 121625737. The next prime is 121625773. The reversal of 121625740 is 47526121.

It is a junction number, because it is equal to n+sod(n) for n = 121625699 and 121625708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3040624 + ... + 3040663.

It is an arithmetic number, because the mean of its divisors is an integer number (21284508).

Almost surely, 2^121625740 is an apocalyptic number.

121625740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121625740 is an abundant number, since it is smaller than the sum of its proper divisors (133788356).

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

121625740 is a wasteful number, since it uses less digits than its factorization.

121625740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6081296 (or 6081294 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 121625740 is about 11028.4060498333. The cubic root of 121625740 is about 495.4598861779.

The spelling of 121625740 in words is "one hundred twenty-one million, six hundred twenty-five thousand, seven hundred forty".