121250657 has 8 divisors (see below), whose sum is σ = 132747552. Its totient is φ = 109832800.

The previous prime is 121250621. The next prime is 121250671. The reversal of 121250657 is 756052121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121250657 - 2⁶ = 121250593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121250677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16523 + ... + 22704.

It is an arithmetic number, because the mean of its divisors is an integer number (16593444).

Almost surely, 2^121250657 is an apocalyptic number.

It is an amenable number.

121250657 is a deficient number, since it is larger than the sum of its proper divisors (11496895).

121250657 is a wasteful number, since it uses less digits than its factorization.

121250657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39519.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 121250657 is about 11011.3876055654. The cubic root of 121250657 is about 494.9500435930.

The spelling of 121250657 in words is "one hundred twenty-one million, two hundred fifty thousand, six hundred fifty-seven".