40920071 has 8 divisors (see below), whose sum is σ = 43641360. Its totient is φ = 38233728.

The previous prime is 40920067. The next prime is 40920083. The reversal of 40920071 is 17002904.

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

It is a cyclic number.

It is not a de Polignac number, because 40920071 - 2² = 40920067 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 (40920001) 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, 6296 + ... + 11021.

It is an arithmetic number, because the mean of its divisors is an integer number (5455170).

Almost surely, 2^40920071 is an apocalyptic number.

40920071 is a deficient number, since it is larger than the sum of its proper divisors (2721289).

40920071 is a wasteful number, since it uses less digits than its factorization.

40920071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17473.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 40920071 is about 6396.8797862708. The cubic root of 40920071 is about 344.5975030211.

Adding to 40920071 its reverse (17002904), we get a palindrome (57922975).

The spelling of 40920071 in words is "forty million, nine hundred twenty thousand, seventy-one".