140415420 has 24 divisors (see below), whose sum is σ = 393163344. Its totient is φ = 37444096.

The previous prime is 140415403. The next prime is 140415439. The reversal of 140415420 is 24514041.

It is a happy number.

140415420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170069 + ... + 1170188.

It is an arithmetic number, because the mean of its divisors is an integer number (16381806).

Almost surely, 2^140415420 is an apocalyptic number.

140415420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140415420 is an abundant number, since it is smaller than the sum of its proper divisors (252747924).

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

140415420 is a wasteful number, since it uses less digits than its factorization.

140415420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340269 (or 2340267 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140415420 is about 11849.7012620572. The cubic root of 140415420 is about 519.7624901533.

Adding to 140415420 its reverse (24514041), we get a palindrome (164929461).

The spelling of 140415420 in words is "one hundred forty million, four hundred fifteen thousand, four hundred twenty".