121620464 has 40 divisors (see below), whose sum is σ = 270363648. Its totient is φ = 51917760.

The previous prime is 121620449. The next prime is 121620467. The reversal of 121620464 is 464026121.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121620467) 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, 28349 + ... + 32355.

Almost surely, 2^121620464 is an apocalyptic number.

121620464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121620464 is an abundant number, since it is smaller than the sum of its proper divisors (148743184).

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

121620464 is a wasteful number, since it uses less digits than its factorization.

121620464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 121620464 is about 11028.1668467611. The cubic root of 121620464 is about 495.4527218935.

Adding to 121620464 its reverse (464026121), we get a palindrome (585646585).

The spelling of 121620464 in words is "one hundred twenty-one million, six hundred twenty thousand, four hundred sixty-four".