140042506 has 8 divisors (see below), whose sum is σ = 210358080. Its totient is φ = 69923148.

The previous prime is 140042501. The next prime is 140042557. The reversal of 140042506 is 605240041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×140042506² = 39223806973520072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140042501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47256 + ... + 50131.

It is an arithmetic number, because the mean of its divisors is an integer number (26294760).

Almost surely, 2^140042506 is an apocalyptic number.

140042506 is a deficient number, since it is larger than the sum of its proper divisors (70315574).

140042506 is an equidigital number, since it uses as much as digits as its factorization.

140042506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98108.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140042506 is about 11833.9556362190. The cubic root of 140042506 is about 519.3019553806.

Adding to 140042506 its reverse (605240041), we get a palindrome (745282547).

The spelling of 140042506 in words is "one hundred forty million, forty-two thousand, five hundred six".