1342439641 has 2 divisors, whose sum is σ = 1342439642. Its totient is φ = 1342439640.

The previous prime is 1342439639. The next prime is 1342439713. The reversal of 1342439641 is 1469342431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738263241 + 604176400 = 27171^2 + 24580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342439641 - 2¹ = 1342439639 is a prime.

Together with 1342439639, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1342439641.

It is not a weakly prime, because it can be changed into another prime (1342439041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671219820 + 671219821.

It is an arithmetic number, because the mean of its divisors is an integer number (671219821).

Almost surely, 2^1342439641 is an apocalyptic number.

It is an amenable number.

1342439641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342439641 is an equidigital number, since it uses as much as digits as its factorization.

1342439641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 1342439641 is about 36639.3182387446. The cubic root of 1342439641 is about 1103.1424305506.

The spelling of 1342439641 in words is "one billion, three hundred forty-two million, four hundred thirty-nine thousand, six hundred forty-one".