40140080 has 40 divisors (see below), whose sum is σ = 95096592. Its totient is φ = 15751424.

The previous prime is 40140073. The next prime is 40140101. The reversal of 40140080 is 8004104.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×40140080² = 3222452044812800, 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, 494 + ... + 8973.

Almost surely, 2^40140080 is an apocalyptic number.

40140080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40140080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47548296).

40140080 is an abundant number, since it is smaller than the sum of its proper divisors (54956512).

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

40140080 is a wasteful number, since it uses less digits than its factorization.

40140080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533 (or 9527 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 40140080 is about 6335.6199380960. The cubic root of 40140080 is about 342.3939465987.

Adding to 40140080 its reverse (8004104), we get a palindrome (48144184).

The spelling of 40140080 in words is "forty million, one hundred forty thousand, eighty".