140647240 has 32 divisors (see below), whose sum is σ = 316844280. Its totient is φ = 56189952.

The previous prime is 140647223. The next prime is 140647267. The reversal of 140647240 is 42746041.

140647240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 139192804 + 1454436 = 11798^2 + 1206^2 .

It is a super-2 number, since 2×140647240² = 39563292239235200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 140647199 and 140647208.

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, 42112 + ... + 45328.

Almost surely, 2^140647240 is an apocalyptic number.

140647240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140647240 is an abundant number, since it is smaller than the sum of its proper divisors (176197040).

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

140647240 is a wasteful number, since it uses less digits than its factorization.

140647240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321 (or 4317 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 140647240 is about 11859.4789092945. The cubic root of 140647240 is about 520.0483682819.

The spelling of 140647240 in words is "one hundred forty million, six hundred forty-seven thousand, two hundred forty".