121851464 has 32 divisors (see below), whose sum is σ = 262180800. Its totient is φ = 52008000.

The previous prime is 121851463. The next prime is 121851491. The reversal of 121851464 is 464158121.

It is a self number, because there is not a number n which added to its sum of digits gives 121851464.

It is not an unprimeable number, because it can be changed into a prime (121851463) 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, 9722 + ... + 18390.

It is an arithmetic number, because the mean of its divisors is an integer number (8193150).

Almost surely, 2^121851464 is an apocalyptic number.

121851464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121851464 is an abundant number, since it is smaller than the sum of its proper divisors (140329336).

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

121851464 is a wasteful number, since it uses less digits than its factorization.

121851464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933 (or 8929 counting only the distinct ones).

The product of its digits is 7680, while the sum is 32.

The square root of 121851464 is about 11038.6350605498. The cubic root of 121851464 is about 495.7662031158.

The spelling of 121851464 in words is "one hundred twenty-one million, eight hundred fifty-one thousand, four hundred sixty-four".