747442 has 4 divisors (see below), whose sum is σ = 1121166. Its totient is φ = 373720.

The previous prime is 747427. The next prime is 747449. The reversal of 747442 is 244747.

747442 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 398161 + 349281 = 631^2 + 591^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 747442.

It is not an unprimeable number, because it can be changed into a prime (747449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186859 + ... + 186862.

2⁷⁴⁷⁴⁴² is an apocalyptic number.

747442 is a deficient number, since it is larger than the sum of its proper divisors (373724).

747442 is a wasteful number, since it uses less digits than its factorization.

747442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373723.

The product of its digits is 6272, while the sum is 28.

The square root of 747442 is about 864.5472803728. The cubic root of 747442 is about 90.7526187751.

The spelling of 747442 in words is "seven hundred forty-seven thousand, four hundred forty-two", and thus it is an iban number.