140040042 has 32 divisors (see below), whose sum is σ = 288626112. Its totient is φ = 45264384.

The previous prime is 140040037. The next prime is 140040059. The reversal of 140040042 is 240040041.

140040042 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×140040042² = 39222426726723528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77473 + ... + 79259.

It is an arithmetic number, because the mean of its divisors is an integer number (9019566).

Almost surely, 2^140040042 is an apocalyptic number.

140040042 is an abundant number, since it is smaller than the sum of its proper divisors (148586070).

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

140040042 is a wasteful number, since it uses less digits than its factorization.

140040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 140040042 is about 11833.8515285599. The cubic root of 140040042 is about 519.2989097159.

Adding to 140040042 its reverse (240040041), we get a palindrome (380080083).

Subtracting 140040042 from its reverse (240040041), we obtain a palindrome (99999999).

The spelling of 140040042 in words is "one hundred forty million, forty thousand, forty-two".