140478420 has 48 divisors (see below), whose sum is σ = 402494400. Its totient is φ = 36589056.

The previous prime is 140478409. The next prime is 140478451. The reversal of 140478420 is 24874041.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24645 + ... + 29804.

It is an arithmetic number, because the mean of its divisors is an integer number (8385300).

Almost surely, 2^140478420 is an apocalyptic number.

140478420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140478420 is an abundant number, since it is smaller than the sum of its proper divisors (262015980).

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

140478420 is a wasteful number, since it uses less digits than its factorization.

140478420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54504 (or 54502 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 140478420 is about 11852.3592588143. The cubic root of 140478420 is about 519.8402122460.

The spelling of 140478420 in words is "one hundred forty million, four hundred seventy-eight thousand, four hundred twenty".