40142500 has 30 divisors (see below), whose sum is σ = 87789086. Its totient is φ = 16056000.

The previous prime is 40142483. The next prime is 40142503. The reversal of 40142500 is 524104.

It can be written as a sum of positive squares in 5 ways, for example, as 16581184 + 23561316 = 4072^2 + 4854^2 .

It is a super-2 number, since 2×40142500² = 3222840612500000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40142503) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5529 + ... + 10528.

Almost surely, 2^40142500 is an apocalyptic number.

It is an amenable number.

40142500 is an abundant number, since it is smaller than the sum of its proper divisors (47646586).

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

40142500 is a wasteful number, since it uses less digits than its factorization.

40142500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16081 (or 16064 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40142500 is about 6335.8109188959. The cubic root of 40142500 is about 342.4008273082.

Adding to 40142500 its reverse (524104), we get a palindrome (40666604).

The spelling of 40142500 in words is "forty million, one hundred forty-two thousand, five hundred".