742271519 has 32 divisors (see below), whose sum is σ = 849325824. Its totient is φ = 642919680.

The previous prime is 742271513. The next prime is 742271521. The reversal of 742271519 is 915172247.

It is a happy number.

It is not a de Polignac number, because 742271519 - 2⁸ = 742271263 is a prime.

It is a super-2 number, since 2×742271519² = 1101934015837134722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742271513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4553732 + ... + 4553894.

It is an arithmetic number, because the mean of its divisors is an integer number (26541432).

Almost surely, 2^742271519 is an apocalyptic number.

742271519 is a deficient number, since it is larger than the sum of its proper divisors (107054305).

742271519 is a wasteful number, since it uses less digits than its factorization.

742271519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its digits is 35280, while the sum is 38.

The square root of 742271519 is about 27244.6603759342. The cubic root of 742271519 is about 905.4287190680.

The spelling of 742271519 in words is "seven hundred forty-two million, two hundred seventy-one thousand, five hundred nineteen".