121537427 has 8 divisors (see below), whose sum is σ = 135088560. Its totient is φ = 108403360.

The previous prime is 121537417. The next prime is 121537439. The reversal of 121537427 is 724735121.

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

It is a cyclic number.

It is not a de Polignac number, because 121537427 - 2¹⁸ = 121275283 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121537393 and 121537402.

It is not an unprimeable number, because it can be changed into a prime (121537417) 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, 103652 + ... + 104817.

It is an arithmetic number, because the mean of its divisors is an integer number (16886070).

Almost surely, 2^121537427 is an apocalyptic number.

121537427 is a deficient number, since it is larger than the sum of its proper divisors (13551133).

121537427 is a wasteful number, since it uses less digits than its factorization.

121537427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208533.

The product of its digits is 11760, while the sum is 32.

The square root of 121537427 is about 11024.4014349986. The cubic root of 121537427 is about 495.3399385868.

The spelling of 121537427 in words is "one hundred twenty-one million, five hundred thirty-seven thousand, four hundred twenty-seven".