1264113642 has 32 divisors (see below), whose sum is σ = 2920307904. Its totient is φ = 360531200.

The previous prime is 1264113637. The next prime is 1264113647. The reversal of 1264113642 is 2463114621.

It is an interprime number because it is at equal distance from previous prime (1264113637) and next prime (1264113647).

It is not an unprimeable number, because it can be changed into a prime (1264113647) 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, 562209 + ... + 564452.

It is an arithmetic number, because the mean of its divisors is an integer number (91259622).

Almost surely, 2^1264113642 is an apocalyptic number.

1264113642 is an abundant number, since it is smaller than the sum of its proper divisors (1656194262).

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

1264113642 is a wasteful number, since it uses less digits than its factorization.

1264113642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126694.

The product of its digits is 6912, while the sum is 30.

The square root of 1264113642 is about 35554.3758488319. The cubic root of 1264113642 is about 1081.2564372544.

The spelling of 1264113642 in words is "one billion, two hundred sixty-four million, one hundred thirteen thousand, six hundred forty-two".