64121154 has 8 divisors (see below), whose sum is σ = 128242320. Its totient is φ = 21373716.

The previous prime is 64121137. The next prime is 64121159. The reversal of 64121154 is 45112146.

It is a happy number.

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

64121154 is an admirable number.

It is a super-2 number, since 2×64121154² = 8223044780583432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64121159) 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, 5343424 + ... + 5343435.

It is an arithmetic number, because the mean of its divisors is an integer number (16030290).

Almost surely, 2^64121154 is an apocalyptic number.

64121154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64121154 is a wasteful number, since it uses less digits than its factorization.

64121154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686864.

The product of its digits is 960, while the sum is 24.

The square root of 64121154 is about 8007.5685448206. The cubic root of 64121154 is about 400.2522450643.

The spelling of 64121154 in words is "sixty-four million, one hundred twenty-one thousand, one hundred fifty-four".