40140451 has 32 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 32507904.

The previous prime is 40140431. The next prime is 40140461. The reversal of 40140451 is 15404104.

It is not a de Polignac number, because 40140451 - 2¹⁹ = 39616163 is a prime.

It is a super-2 number, since 2×40140451² = 3222511612966802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40140421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 269325 + ... + 269473.

It is an arithmetic number, because the mean of its divisors is an integer number (1530900).

Almost surely, 2^40140451 is an apocalyptic number.

40140451 is a deficient number, since it is larger than the sum of its proper divisors (8848349).

40140451 is a wasteful number, since it uses less digits than its factorization.

40140451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 40140451 is about 6335.6492169311. The cubic root of 40140451 is about 342.3950014692.

Adding to 40140451 its reverse (15404104), we get a palindrome (55544555).

The spelling of 40140451 in words is "forty million, one hundred forty thousand, four hundred fifty-one".