745198542 has 40 divisors (see below), whose sum is σ = 1821600792. Its totient is φ = 225817200.

The previous prime is 745198499. The next prime is 745198543. The reversal of 745198542 is 245891547.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745198543) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 207309 + ... + 210872.

Almost surely, 2^745198542 is an apocalyptic number.

745198542 is an abundant number, since it is smaller than the sum of its proper divisors (1076402250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745198542 is a wasteful number, since it uses less digits than its factorization.

745198542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418206 (or 418197 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 745198542 is about 27298.3248936633. The cubic root of 745198542 is about 906.6172934535.

The spelling of 745198542 in words is "seven hundred forty-five million, one hundred ninety-eight thousand, five hundred forty-two".