1273200642 has 48 divisors (see below), whose sum is σ = 3159112320. Its totient is φ = 363030336.

The previous prime is 1273200641. The next prime is 1273200653. The reversal of 1273200642 is 2460023721.

1273200642 is a `hidden beast` number, since 12 + 7 + 3 + 2 + 0 + 0 + 642 = 666.

It is not an unprimeable number, because it can be changed into a prime (1273200641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53334 + ... + 73422.

It is an arithmetic number, because the mean of its divisors is an integer number (65814840).

Almost surely, 2^1273200642 is an apocalyptic number.

1273200642 is an abundant number, since it is smaller than the sum of its proper divisors (1885911678).

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

1273200642 is a wasteful number, since it uses less digits than its factorization.

1273200642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20607 (or 20604 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 1273200642 is about 35681.9371951692. The cubic root of 1273200642 is about 1083.8411014440.

The spelling of 1273200642 in words is "one billion, two hundred seventy-three million, two hundred thousand, six hundred forty-two".