121653427 has 24 divisors (see below), whose sum is σ = 144723456. Its totient is φ = 101945088.

The previous prime is 121653419. The next prime is 121653451. The reversal of 121653427 is 724356121.

It is not a de Polignac number, because 121653427 - 2³ = 121653419 is a prime.

It is a Duffinian number.

Its product of digits (10080) is a multiple of the sum of its prime divisors (420).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121653487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 703113 + ... + 703285.

It is an arithmetic number, because the mean of its divisors is an integer number (6030144).

Almost surely, 2^121653427 is an apocalyptic number.

121653427 is a deficient number, since it is larger than the sum of its proper divisors (23070029).

121653427 is a wasteful number, since it uses less digits than its factorization.

121653427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 420 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 121653427 is about 11029.6612368649. The cubic root of 121653427 is about 495.4974789799.

The spelling of 121653427 in words is "one hundred twenty-one million, six hundred fifty-three thousand, four hundred twenty-seven".