745409442 has 8 divisors (see below), whose sum is σ = 1490818896. Its totient is φ = 248469812.

The previous prime is 745409419. The next prime is 745409449. The reversal of 745409442 is 244904547.

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

745409442 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 745409442.

It is not an unprimeable number, because it can be changed into a prime (745409449) 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, 62117448 + ... + 62117459.

It is an arithmetic number, because the mean of its divisors is an integer number (186352362).

Almost surely, 2^745409442 is an apocalyptic number.

745409442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

745409442 is a wasteful number, since it uses less digits than its factorization.

745409442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124234912.

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 745409442 is about 27302.1874947778. The cubic root of 745409442 is about 906.7028131915.

The spelling of 745409442 in words is "seven hundred forty-five million, four hundred nine thousand, four hundred forty-two".