342545779 has 2 divisors, whose sum is σ = 342545780. Its totient is φ = 342545778.

The previous prime is 342545773. The next prime is 342545789. The reversal of 342545779 is 977545243.

It is a weak prime.

It is an emirp because it is prime and its reverse (977545243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 342545779 - 2³ = 342545771 is a prime.

It is a super-2 number, since 2×342545779² = 234675221421433682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (342545771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171272889 + 171272890.

It is an arithmetic number, because the mean of its divisors is an integer number (171272890).

Almost surely, 2^342545779 is an apocalyptic number.

342545779 is a deficient number, since it is larger than the sum of its proper divisors (1).

342545779 is an equidigital number, since it uses as much as digits as its factorization.

342545779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1058400, while the sum is 46.

The square root of 342545779 is about 18507.9923006252. The cubic root of 342545779 is about 699.6908696260.

It can be divided in two parts, 342 and 545779, that added together give a square (546121 = 739²).

The spelling of 342545779 in words is "three hundred forty-two million, five hundred forty-five thousand, seven hundred seventy-nine".