71453242 has 32 divisors (see below), whose sum is σ = 126209664. Its totient is φ = 29702400.

The previous prime is 71453231. The next prime is 71453257. The reversal of 71453242 is 24235417.

It is a self number, because there is not a number n which added to its sum of digits gives 71453242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161073 + ... + 161515.

It is an arithmetic number, because the mean of its divisors is an integer number (3944052).

Almost surely, 2^71453242 is an apocalyptic number.

71453242 is a deficient number, since it is larger than the sum of its proper divisors (54756422).

71453242 is a wasteful number, since it uses less digits than its factorization.

71453242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 6720, while the sum is 28.

The square root of 71453242 is about 8453.0019519695. The cubic root of 71453242 is about 414.9610298724.

Adding to 71453242 its reverse (24235417), we get a palindrome (95688659).

It can be divided in two parts, 714 and 53242, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 71453242 in words is "seventy-one million, four hundred fifty-three thousand, two hundred forty-two".