1342407557 has 2 divisors, whose sum is σ = 1342407558. Its totient is φ = 1342407556.

The previous prime is 1342407529. The next prime is 1342407571. The reversal of 1342407557 is 7557042431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1197782881 + 144624676 = 34609^2 + 12026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1342407557 - 2⁸ = 1342407301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1342407557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1342409557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671203778 + 671203779.

It is an arithmetic number, because the mean of its divisors is an integer number (671203779).

Almost surely, 2^1342407557 is an apocalyptic number.

It is an amenable number.

1342407557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342407557 is an equidigital number, since it uses as much as digits as its factorization.

1342407557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 1342407557 is about 36638.8804004708. The cubic root of 1342407557 is about 1103.1336421968.

Adding to 1342407557 its reverse (7557042431), we get a palindrome (8899449988).

The spelling of 1342407557 in words is "one billion, three hundred forty-two million, four hundred seven thousand, five hundred fifty-seven".