40072071 has 8 divisors (see below), whose sum is σ = 57539440. Its totient is φ = 24659712.

The previous prime is 40072069. The next prime is 40072079. The reversal of 40072071 is 17027004.

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

It is not a de Polignac number, because 40072071 - 2¹ = 40072069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513706 + ... + 513783.

It is an arithmetic number, because the mean of its divisors is an integer number (7192430).

Almost surely, 2^40072071 is an apocalyptic number.

40072071 is a deficient number, since it is larger than the sum of its proper divisors (17467369).

40072071 is a wasteful number, since it uses less digits than its factorization.

40072071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027505.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 40072071 is about 6330.2504689783. The cubic root of 40072071 is about 342.2004655582.

Adding to 40072071 its reverse (17027004), we get a palindrome (57099075).

The spelling of 40072071 in words is "forty million, seventy-two thousand, seventy-one".