742901643449 has 4 divisors (see below), whose sum is σ = 849030449664. Its totient is φ = 636772837236.

The previous prime is 742901643437. The next prime is 742901643457. The reversal of 742901643449 is 944346109247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 742901643449 - 2¹² = 742901639353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742901643449.

It is not an unprimeable number, because it can be changed into a prime (742901643499) 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, 53064403097 + ... + 53064403110.

It is an arithmetic number, because the mean of its divisors is an integer number (212257612416).

Almost surely, 2^742901643449 is an apocalyptic number.

It is an amenable number.

742901643449 is a deficient number, since it is larger than the sum of its proper divisors (106128806215).

742901643449 is a wasteful number, since it uses less digits than its factorization.

742901643449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106128806214.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 742901643449 in words is "seven hundred forty-two billion, nine hundred one million, six hundred forty-three thousand, four hundred forty-nine".