40147140 has 96 divisors (see below), whose sum is σ = 124830720. Its totient is φ = 9558400.

The previous prime is 40147117. The next prime is 40147141. The reversal of 40147140 is 4174104.

It is a super-2 number, since 2×40147140² = 3223585700359200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40147141) 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, 38425 + ... + 39455.

It is an arithmetic number, because the mean of its divisors is an integer number (1300320).

Almost surely, 2^40147140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40147140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62415360).

40147140 is an abundant number, since it is smaller than the sum of its proper divisors (84683580).

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

40147140 is a wasteful number, since it uses less digits than its factorization.

40147140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1111 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 40147140 is about 6336.1770808588. The cubic root of 40147140 is about 342.4140193004.

The spelling of 40147140 in words is "forty million, one hundred forty-seven thousand, one hundred forty".