1249920552 has 32 divisors (see below), whose sum is σ = 3128014080. Its totient is φ = 416211840.

The previous prime is 1249920509. The next prime is 1249920583. The reversal of 1249920552 is 2550299421.

It is a self number, because there is not a number n which added to its sum of digits gives 1249920552.

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, 2493 + ... + 50060.

It is an arithmetic number, because the mean of its divisors is an integer number (97750440).

Almost surely, 2^1249920552 is an apocalyptic number.

1249920552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1249920552 is an abundant number, since it is smaller than the sum of its proper divisors (1878093528).

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

1249920552 is a wasteful number, since it uses less digits than its factorization.

1249920552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53553 (or 53549 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 1249920552 is about 35354.2154770828. The cubic root of 1249920552 is about 1077.1945224621.

The spelling of 1249920552 in words is "one billion, two hundred forty-nine million, nine hundred twenty thousand, five hundred fifty-two".