140040522 has 64 divisors (see below), whose sum is σ = 320060160. Its totient is φ = 45369792.

The previous prime is 140040497. The next prime is 140040529. The reversal of 140040522 is 225040041.

140040522 is a `hidden beast` number, since 140 + 0 + 4 + 0 + 522 = 666.

It is a super-2 number, since 2×140040522² = 39222695604064968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 140040495 and 140040504.

It is not an unprimeable number, because it can be changed into a prime (140040529) 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, 477808 + ... + 478100.

It is an arithmetic number, because the mean of its divisors is an integer number (5000940).

Almost surely, 2^140040522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140040522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160030080).

140040522 is an abundant number, since it is smaller than the sum of its proper divisors (180019638).

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

140040522 is a wasteful number, since it uses less digits than its factorization.

140040522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 140040522 is about 11833.8718093446. The cubic root of 140040522 is about 519.2995030300.

Adding to 140040522 its reverse (225040041), we get a palindrome (365080563).

The spelling of 140040522 in words is "one hundred forty million, forty thousand, five hundred twenty-two".