742172841 has 16 divisors (see below), whose sum is σ = 1102300800. Its totient is φ = 493528464.

The previous prime is 742172801. The next prime is 742172881. The reversal of 742172841 is 148271247.

It is an interprime number because it is at equal distance from previous prime (742172801) and next prime (742172881).

It is not a de Polignac number, because 742172841 - 2⁶ = 742172777 is a prime.

It is a super-2 number, since 2×742172841² = 1101641051836022562, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 742172796 and 742172805.

It is not an unprimeable number, because it can be changed into a prime (742172801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23901 + ... + 45338.

It is an arithmetic number, because the mean of its divisors is an integer number (68893800).

Almost surely, 2^742172841 is an apocalyptic number.

It is an amenable number.

742172841 is a deficient number, since it is larger than the sum of its proper divisors (360127959).

742172841 is a wasteful number, since it uses less digits than its factorization.

742172841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69645 (or 69639 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 742172841 is about 27242.8493553813. The cubic root of 742172841 is about 905.3885945528.

The spelling of 742172841 in words is "seven hundred forty-two million, one hundred seventy-two thousand, eight hundred forty-one".