1200912731902 has 32 divisors (see below), whose sum is σ = 2162157732000. Its totient is φ = 494207474688.

The previous prime is 1200912731831. The next prime is 1200912731903. The reversal of 1200912731902 is 2091372190021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200912731903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71491527 + ... + 71508322.

It is an arithmetic number, because the mean of its divisors is an integer number (67567429125).

Almost surely, 2^{1200912731902} is an apocalyptic number.

1200912731902 is a deficient number, since it is larger than the sum of its proper divisors (961245000098).

1200912731902 is a wasteful number, since it uses less digits than its factorization.

1200912731902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142999900.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 1200912731902 in words is "one trillion, two hundred billion, nine hundred twelve million, seven hundred thirty-one thousand, nine hundred two".