121639067 has 8 divisors (see below), whose sum is σ = 134066352. Its totient is φ = 109440000.

The previous prime is 121639057. The next prime is 121639093. The reversal of 121639067 is 760936121.

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 121639067 - 2⁶ = 121639003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121639057) 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, 55934 + ... + 58067.

It is an arithmetic number, because the mean of its divisors is an integer number (16758294).

Almost surely, 2^121639067 is an apocalyptic number.

121639067 is a deficient number, since it is larger than the sum of its proper divisors (12427285).

121639067 is a wasteful number, since it uses less digits than its factorization.

121639067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114109.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 121639067 is about 11029.0102457111. The cubic root of 121639067 is about 495.4779819986.

The spelling of 121639067 in words is "one hundred twenty-one million, six hundred thirty-nine thousand, sixty-seven".