71422357 has 4 divisors (see below), whose sum is σ = 73726336. Its totient is φ = 69118380.

The previous prime is 71422297. The next prime is 71422367. The reversal of 71422357 is 75322417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71422357 - 2²³ = 63033749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 2303947 = 71422357 / (7 + 1 + 4 + 2 + 2 + 3 + 5 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71422367) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1151943 + ... + 1152004.

It is an arithmetic number, because the mean of its divisors is an integer number (18431584).

Almost surely, 2^71422357 is an apocalyptic number.

It is an amenable number.

71422357 is a deficient number, since it is larger than the sum of its proper divisors (2303979).

71422357 is a wasteful number, since it uses less digits than its factorization.

71422357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303978.

The product of its digits is 11760, while the sum is 31.

The square root of 71422357 is about 8451.1748887359. The cubic root of 71422357 is about 414.9012335728.

The spelling of 71422357 in words is "seventy-one million, four hundred twenty-two thousand, three hundred fifty-seven".