747208442 has 4 divisors (see below), whose sum is σ = 1120812666. Its totient is φ = 373604220.

The previous prime is 747208417. The next prime is 747208481. The reversal of 747208442 is 244802747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244802747 = 7 ⋅34971821.

It can be written as a sum of positive squares in only one way, i.e., 695957161 + 51251281 = 26381^2 + 7159^2 .

It is a junction number, because it is equal to n+sod(n) for n = 747208396 and 747208405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186802109 + ... + 186802112.

Almost surely, 2^747208442 is an apocalyptic number.

747208442 is a deficient number, since it is larger than the sum of its proper divisors (373604224).

747208442 is a wasteful number, since it uses less digits than its factorization.

747208442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373604223.

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 747208442 is about 27335.1137184391. The cubic root of 747208442 is about 907.4316510588.

The spelling of 747208442 in words is "seven hundred forty-seven million, two hundred eight thousand, four hundred forty-two".