1264861942 has 32 divisors (see below), whose sum is σ = 1993305600. Its totient is φ = 601419168.

The previous prime is 1264861921. The next prime is 1264861951. The reversal of 1264861942 is 2491684621.

It is a super-2 number, since 2×1264861942² = 3199751464640022728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551923 + ... + 554209.

It is an arithmetic number, because the mean of its divisors is an integer number (62290800).

Almost surely, 2^1264861942 is an apocalyptic number.

1264861942 is a deficient number, since it is larger than the sum of its proper divisors (728443658).

1264861942 is a wasteful number, since it uses less digits than its factorization.

1264861942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500.

The product of its digits is 165888, while the sum is 43.

The square root of 1264861942 is about 35564.8976098625. The cubic root of 1264861942 is about 1081.4697473467.

The spelling of 1264861942 in words is "one billion, two hundred sixty-four million, eight hundred sixty-one thousand, nine hundred forty-two".