71424142 has 4 divisors (see below), whose sum is σ = 107136216. Its totient is φ = 35712070.

The previous prime is 71424139. The next prime is 71424151. The reversal of 71424142 is 24142417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24142417 = 13 ⋅1857109.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17856034 + ... + 17856037.

It is an arithmetic number, because the mean of its divisors is an integer number (26784054).

Almost surely, 2^71424142 is an apocalyptic number.

71424142 is a deficient number, since it is larger than the sum of its proper divisors (35712074).

71424142 is a wasteful number, since it uses less digits than its factorization.

71424142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35712073.

The product of its digits is 1792, while the sum is 25.

The square root of 71424142 is about 8451.2804946943. The cubic root of 71424142 is about 414.9046899720.

Adding to 71424142 its reverse (24142417), we get a palindrome (95566559).

The spelling of 71424142 in words is "seventy-one million, four hundred twenty-four thousand, one hundred forty-two".