121957373 has 4 divisors (see below), whose sum is σ = 122034780. Its totient is φ = 121879968.

The previous prime is 121957351. The next prime is 121957387. The reversal of 121957373 is 373759121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 373759121 = 5003 ⋅74707.

It can be written as a sum of positive squares in 2 ways, for example, as 108722329 + 13235044 = 10427^2 + 3638^2 .

It is a cyclic number.

It is not a de Polignac number, because 121957373 - 2⁶ = 121957309 is a prime.

It is a super-2 number, since 2×121957373² = 29747201658122258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121957573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36290 + ... + 39507.

It is an arithmetic number, because the mean of its divisors is an integer number (30508695).

Almost surely, 2^121957373 is an apocalyptic number.

It is an amenable number.

121957373 is a deficient number, since it is larger than the sum of its proper divisors (77407).

121957373 is an equidigital number, since it uses as much as digits as its factorization.

121957373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77406.

The product of its digits is 39690, while the sum is 38.

The square root of 121957373 is about 11043.4312149802. The cubic root of 121957373 is about 495.9097956951.

The spelling of 121957373 in words is "one hundred twenty-one million, nine hundred fifty-seven thousand, three hundred seventy-three".