140400042 has 16 divisors (see below), whose sum is σ = 297317952. Its totient is φ = 44047040.

The previous prime is 140400037. The next prime is 140400047. The reversal of 140400042 is 240004041.

140400042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (140400037) and next prime (140400047).

It is a junction number, because it is equal to n+sod(n) for n = 140399994 and 140400030.

It is not an unprimeable number, because it can be changed into a prime (140400047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688134 + ... + 688337.

It is an arithmetic number, because the mean of its divisors is an integer number (18582372).

Almost surely, 2^140400042 is an apocalyptic number.

140400042 is an abundant number, since it is smaller than the sum of its proper divisors (156917910).

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

140400042 is a wasteful number, since it uses less digits than its factorization.

140400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376493.

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

The square root of 140400042 is about 11849.0523671727. The cubic root of 140400042 is about 519.7435150308.

Adding to 140400042 its reverse (240004041), we get a palindrome (380404083).

The spelling of 140400042 in words is "one hundred forty million, four hundred thousand, forty-two".