121202540 has 24 divisors (see below), whose sum is σ = 254832480. Its totient is φ = 48422528.

The previous prime is 121202533. The next prime is 121202551. The reversal of 121202540 is 45202121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15881 + ... + 22239.

It is an arithmetic number, because the mean of its divisors is an integer number (10618020).

Almost surely, 2^121202540 is an apocalyptic number.

121202540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202540 is an abundant number, since it is smaller than the sum of its proper divisors (133629940).

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

121202540 is a wasteful number, since it uses less digits than its factorization.

121202540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321 (or 7319 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121202540 is about 11009.2025142605. The cubic root of 121202540 is about 494.8845630893.

Adding to 121202540 its reverse (45202121), we get a palindrome (166404661).

The spelling of 121202540 in words is "one hundred twenty-one million, two hundred two thousand, five hundred forty".