745442042 has 16 divisors (see below), whose sum is σ = 1162731240. Its totient is φ = 357998592.

The previous prime is 745442039. The next prime is 745442057. The reversal of 745442042 is 240244547.

It can be written as a sum of positive squares in 4 ways, for example, as 523997881 + 221444161 = 22891^2 + 14881^2 .

It is a super-2 number, since 2×745442042² = 1111367675962259528, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22103 + ... + 44490.

Almost surely, 2^745442042 is an apocalyptic number.

745442042 is a deficient number, since it is larger than the sum of its proper divisors (417289198).

745442042 is a wasteful number, since it uses less digits than its factorization.

745442042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66817.

The product of its (nonzero) digits is 35840, while the sum is 32.

The square root of 745442042 is about 27302.7845100092. The cubic root of 745442042 is about 906.7160310192.

Adding to 745442042 its reverse (240244547), we get a palindrome (985686589).

The spelling of 745442042 in words is "seven hundred forty-five million, four hundred forty-two thousand, forty-two".