140972478 has 8 divisors (see below), whose sum is σ = 281944968. Its totient is φ = 46990824.

The previous prime is 140972453. The next prime is 140972519. The reversal of 140972478 is 874279041.

It is a happy number.

140972478 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

140972478 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11747701 + ... + 11747712.

It is an arithmetic number, because the mean of its divisors is an integer number (35243121).

Almost surely, 2^140972478 is an apocalyptic number.

140972478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140972478 is a wasteful number, since it uses less digits than its factorization.

140972478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23495418.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 140972478 is about 11873.1831452227. The cubic root of 140972478 is about 520.4489195324.

The spelling of 140972478 in words is "one hundred forty million, nine hundred seventy-two thousand, four hundred seventy-eight".