745142447 has 8 divisors (see below), whose sum is σ = 866025600. Its totient is φ = 627867864.

The previous prime is 745142441. The next prime is 745142449. The reversal of 745142447 is 744241547.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 745142447 - 2⁸ = 745142191 is a prime.

It is a super-2 number, since 2×745142447² = 1110474532642295618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 745142447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745142441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901697 + ... + 902522.

It is an arithmetic number, because the mean of its divisors is an integer number (108253200).

Almost surely, 2^745142447 is an apocalyptic number.

745142447 is a deficient number, since it is larger than the sum of its proper divisors (120883153).

745142447 is a wasteful number, since it uses less digits than its factorization.

745142447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804285.

The product of its digits is 125440, while the sum is 38.

The square root of 745142447 is about 27297.2974303318. The cubic root of 745142447 is about 906.5945442709.

The spelling of 745142447 in words is "seven hundred forty-five million, one hundred forty-two thousand, four hundred forty-seven".