40137205 has 8 divisors (see below), whose sum is σ = 48249432. Its totient is φ = 32053248.

The previous prime is 40137203. The next prime is 40137233. The reversal of 40137205 is 50273104.

It can be written as a sum of positive squares in 4 ways, for example, as 16459249 + 23677956 = 4057^2 + 4866^2 .

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 40137205 - 2¹ = 40137203 is a prime.

It is a super-2 number, since 2×40137205² = 3221990450424050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40137203) 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, 3804 + ... + 9733.

It is an arithmetic number, because the mean of its divisors is an integer number (6031179).

Almost surely, 2^40137205 is an apocalyptic number.

It is an amenable number.

40137205 is a deficient number, since it is larger than the sum of its proper divisors (8112227).

40137205 is a wasteful number, since it uses less digits than its factorization.

40137205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14135.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40137205 is about 6335.3930422666. The cubic root of 40137205 is about 342.3857718425.

The spelling of 40137205 in words is "forty million, one hundred thirty-seven thousand, two hundred five".