121457975 has 24 divisors (see below), whose sum is σ = 159342480. Its totient is φ = 91584000.

The previous prime is 121457971. The next prime is 121457989. The reversal of 121457975 is 579754121.

121457975 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 121457975 - 2² = 121457971 is a prime.

It is a super-2 number, since 2×121457975² = 29504079382201250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121457971) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 113945 + ... + 115005.

It is an arithmetic number, because the mean of its divisors is an integer number (6639270).

Almost surely, 2^121457975 is an apocalyptic number.

121457975 is a deficient number, since it is larger than the sum of its proper divisors (37884505).

121457975 is a wasteful number, since it uses less digits than its factorization.

121457975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331 (or 1326 counting only the distinct ones).

The product of its digits is 88200, while the sum is 41.

The square root of 121457975 is about 11020.7973849445. The cubic root of 121457975 is about 495.2319764311.

The spelling of 121457975 in words is "one hundred twenty-one million, four hundred fifty-seven thousand, nine hundred seventy-five".