71422045 has 12 divisors (see below), whose sum is σ = 90457020. Its totient is φ = 54129024.

The previous prime is 71422031. The next prime is 71422063. The reversal of 71422045 is 54022417.

It can be written as a sum of positive squares in 2 ways, for example, as 34916281 + 36505764 = 5909^2 + 6042^2 .

It is not a de Polignac number, because 71422045 - 2⁹ = 71421533 is a prime.

It is a super-2 number, since 2×71422045² = 10202217023964050, which contains 22 as substring.

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 in 11 ways as a sum of consecutive naturals, for example, 17980 + ... + 21589.

It is an arithmetic number, because the mean of its divisors is an integer number (7538085).

Almost surely, 2^71422045 is an apocalyptic number.

It is an amenable number.

71422045 is a deficient number, since it is larger than the sum of its proper divisors (19034975).

71422045 is a wasteful number, since it uses less digits than its factorization.

71422045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39612 (or 39593 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 71422045 is about 8451.1564297438. The cubic root of 71422045 is about 414.9006294232.

The spelling of 71422045 in words is "seventy-one million, four hundred twenty-two thousand, forty-five".