40275021 has 8 divisors (see below), whose sum is σ = 53937504. Its totient is φ = 26731280.

The previous prime is 40275017. The next prime is 40275029. The reversal of 40275021 is 12057204.

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 40275021 - 2² = 40275017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40275029) 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, 28890 + ... + 30251.

It is an arithmetic number, because the mean of its divisors is an integer number (6742188).

Almost surely, 2^40275021 is an apocalyptic number.

It is an amenable number.

40275021 is a deficient number, since it is larger than the sum of its proper divisors (13662483).

40275021 is a wasteful number, since it uses less digits than its factorization.

40275021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59371.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 40275021 is about 6346.2603949097. The cubic root of 40275021 is about 342.7771986475. Note that the first 3 decimals are identical.

The spelling of 40275021 in words is "forty million, two hundred seventy-five thousand, twenty-one".