121142624 has 24 divisors (see below), whose sum is σ = 241771320. Its totient is φ = 59740416.

The previous prime is 121142611. The next prime is 121142627. The reversal of 121142624 is 426241121.

It is a super-3 number, since 3×121142624³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121142624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142627) 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, 23594 + ... + 28265.

It is an arithmetic number, because the mean of its divisors is an integer number (10073805).

Almost surely, 2^121142624 is an apocalyptic number.

It is an amenable number.

121142624 is a deficient number, since it is larger than the sum of its proper divisors (120628696).

121142624 is an equidigital number, since it uses as much as digits as its factorization.

121142624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51942 (or 51934 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 121142624 is about 11006.4809998473. The cubic root of 121142624 is about 494.8030015675.

Adding to 121142624 its reverse (426241121), we get a palindrome (547383745).

The spelling of 121142624 in words is "one hundred twenty-one million, one hundred forty-two thousand, six hundred twenty-four".