1295426320 has 40 divisors (see below), whose sum is σ = 3027038400. Its totient is φ = 515560320.

The previous prime is 1295426261. The next prime is 1295426369. The reversal of 1295426320 is 236245921.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24766 + ... + 56605.

It is an arithmetic number, because the mean of its divisors is an integer number (75675960).

Almost surely, 2^1295426320 is an apocalyptic number.

1295426320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1295426320 is an abundant number, since it is smaller than the sum of its proper divisors (1731612080).

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

1295426320 is a wasteful number, since it uses less digits than its factorization.

1295426320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81583 (or 81577 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 1295426320 is about 35992.0313402842. The cubic root of 1295426320 is about 1090.1114607002. Note that the first 3 decimals are identical.

The spelling of 1295426320 in words is "one billion, two hundred ninety-five million, four hundred twenty-six thousand, three hundred twenty".