745171402 has 4 divisors (see below), whose sum is σ = 1117757106. Its totient is φ = 372585700.

The previous prime is 745171391. The next prime is 745171423. The reversal of 745171402 is 204171547.

745171402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204171547 = 17 ⋅12010091.

It can be written as a sum of positive squares in only one way, i.e., 587141361 + 158030041 = 24231^2 + 12571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186292849 + ... + 186292852.

Almost surely, 2^745171402 is an apocalyptic number.

745171402 is a deficient number, since it is larger than the sum of its proper divisors (372585704).

745171402 is a wasteful number, since it uses less digits than its factorization.

745171402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372585703.

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 745171402 is about 27297.8277890385. The cubic root of 745171402 is about 906.6062870390.

The spelling of 745171402 in words is "seven hundred forty-five million, one hundred seventy-one thousand, four hundred two".