121400064 has 54 divisors (see below), whose sum is σ = 350032956. Its totient is φ = 40465920.

The previous prime is 121400053. The next prime is 121400087. The reversal of 121400064 is 460004121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24042 + ... + 28649.

Almost surely, 2^121400064 is an apocalyptic number.

It is an amenable number.

121400064 is an abundant number, since it is smaller than the sum of its proper divisors (228632892).

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

121400064 is an equidigital number, since it uses as much as digits as its factorization.

121400064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52713 (or 52696 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121400064 is about 11018.1697209655. The cubic root of 121400064 is about 495.1532552705.

Adding to 121400064 its reverse (460004121), we get a palindrome (581404185).

The spelling of 121400064 in words is "one hundred twenty-one million, four hundred thousand, sixty-four".