121273040 has 60 divisors (see below), whose sum is σ = 328004676. Its totient is φ = 41577984.

The previous prime is 121273027. The next prime is 121273049. The reversal of 121273040 is 40372121.

It can be written as a sum of positive squares in 2 ways, for example, as 27415696 + 93857344 = 5236^2 + 9688^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121273049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11549 + ... + 19388.

Almost surely, 2^121273040 is an apocalyptic number.

121273040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121273040 is an abundant number, since it is smaller than the sum of its proper divisors (206731636).

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

121273040 is a wasteful number, since it uses less digits than its factorization.

121273040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30964 (or 30951 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 121273040 is about 11012.4039155854. The cubic root of 121273040 is about 494.9804978202.

The spelling of 121273040 in words is "one hundred twenty-one million, two hundred seventy-three thousand, forty".