40126280 has 32 divisors (see below), whose sum is σ = 90496440. Its totient is φ = 16012800.

The previous prime is 40126231. The next prime is 40126291. The reversal of 40126280 is 8262104.

It can be written as a sum of positive squares in 4 ways, for example, as 14945956 + 25180324 = 3866^2 + 5018^2 .

It is a super-2 number, since 2×40126280² = 3220236693276800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21380 + ... + 23180.

Almost surely, 2^40126280 is an apocalyptic number.

40126280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40126280 is an abundant number, since it is smaller than the sum of its proper divisors (50370160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40126280 is a wasteful number, since it uses less digits than its factorization.

40126280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369 (or 2365 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 40126280 is about 6334.5307639951. The cubic root of 40126280 is about 342.3547042084.

Adding to 40126280 its reverse (8262104), we get a palindrome (48388384).

The spelling of 40126280 in words is "forty million, one hundred twenty-six thousand, two hundred eighty".