71420042 has 8 divisors (see below), whose sum is σ = 107557632. Its totient is φ = 35567500.

The previous prime is 71420023. The next prime is 71420059. The reversal of 71420042 is 24002417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 71419996 and 71420023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70634 + ... + 71637.

It is an arithmetic number, because the mean of its divisors is an integer number (13444704).

Almost surely, 2^71420042 is an apocalyptic number.

71420042 is a deficient number, since it is larger than the sum of its proper divisors (36137590).

71420042 is a wasteful number, since it uses less digits than its factorization.

71420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142524.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 71420042 is about 8451.0379244209. The cubic root of 71420042 is about 414.8967508180.

Adding to 71420042 its reverse (24002417), we get a palindrome (95422459).

The spelling of 71420042 in words is "seventy-one million, four hundred twenty thousand, forty-two".