71742419 has 6 divisors (see below), whose sum is σ = 83455524. Its totient is φ = 61493460.

The previous prime is 71742373. The next prime is 71742439. The reversal of 71742419 is 91424717.

It is not a de Polignac number, because 71742419 - 2¹² = 71738323 is a prime.

It is a super-2 number, since 2×71742419² = 10293949367943122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71742439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 732017 + ... + 732114.

It is an arithmetic number, because the mean of its divisors is an integer number (13909254).

Almost surely, 2^71742419 is an apocalyptic number.

71742419 is a deficient number, since it is larger than the sum of its proper divisors (11713105).

71742419 is a wasteful number, since it uses less digits than its factorization.

71742419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1464145 (or 1464138 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 71742419 is about 8470.0896689468. The cubic root of 71742419 is about 415.5200699101.

The spelling of 71742419 in words is "seventy-one million, seven hundred forty-two thousand, four hundred nineteen".