140540061 has 8 divisors (see below), whose sum is σ = 193848480. Its totient is φ = 90462512.

The previous prime is 140540033. The next prime is 140540063. The reversal of 140540061 is 160045041.

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

It is a cyclic number.

It is not a de Polignac number, because 140540061 - 2⁷ = 140539933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140540063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 807615 + ... + 807788.

It is an arithmetic number, because the mean of its divisors is an integer number (24231060).

Almost surely, 2^140540061 is an apocalyptic number.

It is an amenable number.

140540061 is a deficient number, since it is larger than the sum of its proper divisors (53308419).

140540061 is a wasteful number, since it uses less digits than its factorization.

140540061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1615435.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 140540061 is about 11854.9593419800. The cubic root of 140540061 is about 519.9162352747.

The spelling of 140540061 in words is "one hundred forty million, five hundred forty thousand, sixty-one".