1263790942 has 8 divisors (see below), whose sum is σ = 1961055000. Its totient is φ = 610105944.

The previous prime is 1263790939. The next prime is 1263790949. The reversal of 1263790942 is 2490973621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263790949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10894692 + ... + 10894807.

It is an arithmetic number, because the mean of its divisors is an integer number (245131875).

Almost surely, 2^1263790942 is an apocalyptic number.

1263790942 is a deficient number, since it is larger than the sum of its proper divisors (697264058).

1263790942 is a wasteful number, since it uses less digits than its factorization.

1263790942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21789530.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1263790942 is about 35549.8374398534. The cubic root of 1263790942 is about 1081.1644225453.

The spelling of 1263790942 in words is "one billion, two hundred sixty-three million, seven hundred ninety thousand, nine hundred forty-two".