742249443 has 8 divisors (see below), whose sum is σ = 1065794128. Its totient is φ = 456768864.

The previous prime is 742249439. The next prime is 742249451. The reversal of 742249443 is 344942247.

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

It is not a de Polignac number, because 742249443 - 2² = 742249439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 19032037 = 742249443 / (7 + 4 + 2 + 2 + 4 + 9 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742249483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9515980 + ... + 9516057.

It is an arithmetic number, because the mean of its divisors is an integer number (133224266).

Almost surely, 2^742249443 is an apocalyptic number.

742249443 is a deficient number, since it is larger than the sum of its proper divisors (323544685).

742249443 is a wasteful number, since it uses less digits than its factorization.

742249443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19032053.

The product of its digits is 193536, while the sum is 39.

The square root of 742249443 is about 27244.2552293139. The cubic root of 742249443 is about 905.4197428188.

It can be divided in two parts, 7422 and 49443, that added together give a palindrome (56865).

The spelling of 742249443 in words is "seven hundred forty-two million, two hundred forty-nine thousand, four hundred forty-three".