1342440637 has 2 divisors, whose sum is σ = 1342440638. Its totient is φ = 1342440636.

The previous prime is 1342440587. The next prime is 1342440641. The reversal of 1342440637 is 7360442431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1015951876 + 326488761 = 31874^2 + 18069^2 .

It is an emirp because it is prime and its reverse (7360442431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1342440637 - 2²⁷ = 1208222909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342440677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671220318 + 671220319.

It is an arithmetic number, because the mean of its divisors is an integer number (671220319).

Almost surely, 2^1342440637 is an apocalyptic number.

It is an amenable number.

1342440637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342440637 is an equidigital number, since it uses as much as digits as its factorization.

1342440637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 1342440637 is about 36639.3318306980. The cubic root of 1342440637 is about 1103.1427033697.

The spelling of 1342440637 in words is "one billion, three hundred forty-two million, four hundred forty thousand, six hundred thirty-seven".