745142531 has 4 divisors (see below), whose sum is σ = 851591472. Its totient is φ = 638693592.

The previous prime is 745142483. The next prime is 745142537. The reversal of 745142531 is 135241547.

745142531 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.

It is a cyclic number.

It is not a de Polignac number, because 745142531 - 2¹⁸ = 744880387 is a prime.

It is a super-2 number, since 2×745142531² = 1110474783010171922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745142537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53224460 + ... + 53224473.

It is an arithmetic number, because the mean of its divisors is an integer number (212897868).

Almost surely, 2^745142531 is an apocalyptic number.

745142531 is a deficient number, since it is larger than the sum of its proper divisors (106448941).

745142531 is a wasteful number, since it uses less digits than its factorization.

745142531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106448940.

The product of its digits is 16800, while the sum is 32.

The square root of 745142531 is about 27297.2989689456. The cubic root of 745142531 is about 906.5945783377.

The spelling of 745142531 in words is "seven hundred forty-five million, one hundred forty-two thousand, five hundred thirty-one".