121361860 has 12 divisors (see below), whose sum is σ = 254859948. Its totient is φ = 48544736.

The previous prime is 121361837. The next prime is 121361893. The reversal of 121361860 is 68163121.

It can be written as a sum of positive squares in 2 ways, for example, as 44729344 + 76632516 = 6688^2 + 8754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034027 + ... + 3034066.

It is an arithmetic number, because the mean of its divisors is an integer number (21238329).

Almost surely, 2^121361860 is an apocalyptic number.

121361860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121361860 is an abundant number, since it is smaller than the sum of its proper divisors (133498088).

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

121361860 is a wasteful number, since it uses less digits than its factorization.

121361860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068102 (or 6068100 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 121361860 is about 11016.4359027773. The cubic root of 121361860 is about 495.1013090605.

It can be divided in two parts, 121361 and 860, that added together give a palindrome (122221).

The spelling of 121361860 in words is "one hundred twenty-one million, three hundred sixty-one thousand, eight hundred sixty".