140155420 has 48 divisors (see below), whose sum is σ = 302097600. Its totient is φ = 54602240.

The previous prime is 140155391. The next prime is 140155423. The reversal of 140155420 is 24551041.

140155420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 140155391 and 140155400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140155423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125826 + ... + 126934.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^140155420 is an apocalyptic number.

140155420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140155420 is an abundant number, since it is smaller than the sum of its proper divisors (161942180).

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

140155420 is a wasteful number, since it uses less digits than its factorization.

140155420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 140155420 is about 11838.7254381542. The cubic root of 140155420 is about 519.4414861333.

The spelling of 140155420 in words is "one hundred forty million, one hundred fifty-five thousand, four hundred twenty".