121860554 has 8 divisors (see below), whose sum is σ = 185787588. Its totient is φ = 59931360.

The previous prime is 121860553. The next prime is 121860559. The reversal of 121860554 is 455068121.

It can be written as a sum of positive squares in 2 ways, for example, as 121506529 + 354025 = 11023^2 + 595^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121860554.

It is not an unprimeable number, because it can be changed into a prime (121860553) 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, 499307 + ... + 499550.

Almost surely, 2^121860554 is an apocalyptic number.

121860554 is a deficient number, since it is larger than the sum of its proper divisors (63927034).

121860554 is an equidigital number, since it uses as much as digits as its factorization.

121860554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998920.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 121860554 is about 11039.0467885592. The cubic root of 121860554 is about 495.7785307005.

The spelling of 121860554 in words is "one hundred twenty-one million, eight hundred sixty thousand, five hundred fifty-four".