1212572240 has 40 divisors (see below), whose sum is σ = 3075526368. Its totient is φ = 440935040.

The previous prime is 1212572227. The next prime is 1212572261. The reversal of 1212572240 is 422752121.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 688082 + ... + 689841.

Almost surely, 2^1212572240 is an apocalyptic number.

1212572240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212572240 is an abundant number, since it is smaller than the sum of its proper divisors (1862954128).

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

1212572240 is a wasteful number, since it uses less digits than its factorization.

1212572240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377947 (or 1377941 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 1212572240 is about 34822.0079834578. The cubic root of 1212572240 is about 1066.3567945379.

The spelling of 1212572240 in words is "one billion, two hundred twelve million, five hundred seventy-two thousand, two hundred forty".