140612164 has 75 divisors (see below), whose sum is σ = 315770735. Its totient is φ = 54783960.

The previous prime is 140612159. The next prime is 140612167. The reversal of 140612164 is 461216041.

The square root of 140612164 is 11858.

It is a perfect power (a square), and thus also a powerful number.

It is an ABA number since it can be written as A⋅B^A, here for A=4, B=77.

It is not an unprimeable number, because it can be changed into a prime (140612167) by changing a digit.

It is a polite number, since it can be written in 24 ways as a sum of consecutive naturals, for example, 12782919 + ... + 12782929.

Almost surely, 2^140612164 is an apocalyptic number.

140612164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140612164 is the 11858-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140612164

140612164 is an abundant number, since it is smaller than the sum of its proper divisors (175158571).

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

140612164 is an frugal number, since it uses more digits than its factorization.

140612164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The cubic root of 140612164 is about 520.0051330854.

Multiplying 140612164 by its sum of digits (25), we get a square (3515304100 = 59290²).

The spelling of 140612164 in words is "one hundred forty million, six hundred twelve thousand, one hundred sixty-four".