1297551342 has 16 divisors (see below), whose sum is σ = 2596441680. Its totient is φ = 432293952.

The previous prime is 1297551337. The next prime is 1297551347. The reversal of 1297551342 is 2431557921.

It is an interprime number because it is at equal distance from previous prime (1297551337) and next prime (1297551347).

It is a self number, because there is not a number n which added to its sum of digits gives 1297551342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297551347) 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 7 ways as a sum of consecutive naturals, for example, 42967 + ... + 66642.

It is an arithmetic number, because the mean of its divisors is an integer number (162277605).

Almost surely, 2^1297551342 is an apocalyptic number.

1297551342 is an abundant number, since it is smaller than the sum of its proper divisors (1298890338).

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

1297551342 is a wasteful number, since it uses less digits than its factorization.

1297551342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111587.

The product of its digits is 75600, while the sum is 39.

The square root of 1297551342 is about 36021.5399726330. The cubic root of 1297551342 is about 1090.7072093180.

The spelling of 1297551342 in words is "one billion, two hundred ninety-seven million, five hundred fifty-one thousand, three hundred forty-two".