140129420 has 24 divisors (see below), whose sum is σ = 297189648. Its totient is φ = 55496000.

The previous prime is 140129411. The next prime is 140129441. The reversal of 140129420 is 24921041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32666 + ... + 36705.

It is an arithmetic number, because the mean of its divisors is an integer number (12382902).

Almost surely, 2^140129420 is an apocalyptic number.

140129420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140129420 is an abundant number, since it is smaller than the sum of its proper divisors (157060228).

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

140129420 is a wasteful number, since it uses less digits than its factorization.

140129420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69481 (or 69479 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 140129420 is about 11837.6272960421. The cubic root of 140129420 is about 519.4093639035.

It can be divided in two parts, 14012 and 9420, that added together give a palindrome (23432).

The spelling of 140129420 in words is "one hundred forty million, one hundred twenty-nine thousand, four hundred twenty".