140292861 has 16 divisors (see below), whose sum is σ = 190540800. Its totient is φ = 91801008.

The previous prime is 140292833. The next prime is 140292869. The reversal of 140292861 is 168292041.

It is not a de Polignac number, because 140292861 - 2⁵ = 140292829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140292869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40770 + ... + 44076.

It is an arithmetic number, because the mean of its divisors is an integer number (11908800).

Almost surely, 2^140292861 is an apocalyptic number.

It is an amenable number.

140292861 is a deficient number, since it is larger than the sum of its proper divisors (50247939).

140292861 is a wasteful number, since it uses less digits than its factorization.

140292861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 140292861 is about 11844.5287369317. The cubic root of 140292861 is about 519.6112244457.

The spelling of 140292861 in words is "one hundred forty million, two hundred ninety-two thousand, eight hundred sixty-one".