140061081 has 8 divisors (see below), whose sum is σ = 190721664. Its totient is φ = 91387280.

The previous prime is 140061071. The next prime is 140061083. The reversal of 140061081 is 180160041.

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 140061081 - 2⁵ = 140061049 is a prime.

It is a super-2 number, since 2×140061081² = 39234212821777122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (140061083) 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, 496530 + ... + 496811.

It is an arithmetic number, because the mean of its divisors is an integer number (23840208).

Almost surely, 2^140061081 is an apocalyptic number.

It is an amenable number.

140061081 is a deficient number, since it is larger than the sum of its proper divisors (50660583).

140061081 is an equidigital number, since it uses as much as digits as its factorization.

140061081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993391.

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 140061081 is about 11834.7404280787. The cubic root of 140061081 is about 519.3249141418.

It can be divided in two parts, 1400 and 61081, that added together give a triangular number (62481 = T₃₅₃).

The spelling of 140061081 in words is "one hundred forty million, sixty-one thousand, eighty-one".