345477742 has 4 divisors (see below), whose sum is σ = 518216616. Its totient is φ = 172738870.

The previous prime is 345477707. The next prime is 345477749. The reversal of 345477742 is 247774543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247774543 = 1613 ⋅153611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345477749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86369434 + ... + 86369437.

It is an arithmetic number, because the mean of its divisors is an integer number (129554154).

Almost surely, 2^345477742 is an apocalyptic number.

345477742 is a deficient number, since it is larger than the sum of its proper divisors (172738874).

345477742 is a wasteful number, since it uses less digits than its factorization.

345477742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172738873.

The product of its digits is 658560, while the sum is 43.

The square root of 345477742 is about 18587.0315542854. The cubic root of 345477742 is about 701.6814963556.

The spelling of 345477742 in words is "three hundred forty-five million, four hundred seventy-seven thousand, seven hundred forty-two".