121637427 has 8 divisors (see below), whose sum is σ = 162281616. Its totient is φ = 81042432.

The previous prime is 121637401. The next prime is 121637437. The reversal of 121637427 is 724736121.

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

It is not a de Polignac number, because 121637427 - 2¹¹ = 121635379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121637437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6078 + ... + 16739.

It is an arithmetic number, because the mean of its divisors is an integer number (20285202).

Almost surely, 2^121637427 is an apocalyptic number.

121637427 is a deficient number, since it is larger than the sum of its proper divisors (40644189).

121637427 is a wasteful number, since it uses less digits than its factorization.

121637427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24597.

The product of its digits is 14112, while the sum is 33.

The square root of 121637427 is about 11028.9358960872. The cubic root of 121637427 is about 495.4757552262.

The spelling of 121637427 in words is "one hundred twenty-one million, six hundred thirty-seven thousand, four hundred twenty-seven".