140154240 has 64 divisors (see below), whose sum is σ = 446747760. Its totient is φ = 37373952.

The previous prime is 140154227. The next prime is 140154253. The reversal of 140154240 is 42451041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140154227) and next prime (140154253).

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 34579 + ... + 38418.

Almost surely, 2^140154240 is an apocalyptic number.

140154240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140154240 is an abundant number, since it is smaller than the sum of its proper divisors (306593520).

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

140154240 is an equidigital number, since it uses as much as digits as its factorization.

140154240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73019 (or 73007 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140154240 is about 11838.6756016034. The cubic root of 140154240 is about 519.4400283643.

It can be divided in two parts, 1 and 40154240, that added together give a triangular number (40154241 = T₈₉₆₁).

The spelling of 140154240 in words is "one hundred forty million, one hundred fifty-four thousand, two hundred forty".