1345890742 has 24 divisors (see below), whose sum is σ = 2362533264. Its totient is φ = 573349392.

The previous prime is 1345890703. The next prime is 1345890809. The reversal of 1345890742 is 2470985431.

It is a super-2 number, since 2×1345890742² = 3622843778802621128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24753 + ... + 57484.

It is an arithmetic number, because the mean of its divisors is an integer number (98438886).

Almost surely, 2^1345890742 is an apocalyptic number.

1345890742 is a deficient number, since it is larger than the sum of its proper divisors (1016642522).

1345890742 is a wasteful number, since it uses less digits than its factorization.

1345890742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82420 (or 82413 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1345890742 is about 36686.3836048199. The cubic root of 1345890742 is about 1104.0869294385.

The spelling of 1345890742 in words is "one billion, three hundred forty-five million, eight hundred ninety thousand, seven hundred forty-two".