140857920 has 448 divisors, whose sum is σ = 605698560. Its totient is φ = 30081024.

The previous prime is 140857883. The next prime is 140857921. The reversal of 140857920 is 29758041.

It is a tau number, because it is divible by the number of its divisors (448).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140857921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1028092 + ... + 1028228.

Almost surely, 2^140857920 is an apocalyptic number.

140857920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140857920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302849280).

140857920 is an abundant number, since it is smaller than the sum of its proper divisors (464840640).

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

140857920 is a wasteful number, since it uses less digits than its factorization.

140857920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 140857920 is about 11868.3579319129. The cubic root of 140857920 is about 520.3079044315.

The spelling of 140857920 in words is "one hundred forty million, eight hundred fifty-seven thousand, nine hundred twenty".