140043061 has 4 divisors (see below), whose sum is σ = 141112224. Its totient is φ = 138973900.

The previous prime is 140043037. The next prime is 140043073. The reversal of 140043061 is 160340041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160340041 = 331 ⋅484411.

It is a cyclic number.

It is not a de Polignac number, because 140043061 - 2²⁷ = 5825333 is a prime.

It is a super-2 number, since 2×140043061² = 39224117868499442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140043011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534385 + ... + 534646.

It is an arithmetic number, because the mean of its divisors is an integer number (35278056).

Almost surely, 2^140043061 is an apocalyptic number.

It is an amenable number.

140043061 is a deficient number, since it is larger than the sum of its proper divisors (1069163).

140043061 is a wasteful number, since it uses less digits than its factorization.

140043061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069162.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 140043061 is about 11833.9790856668. The cubic root of 140043061 is about 519.3026413918.

The spelling of 140043061 in words is "one hundred forty million, forty-three thousand, sixty-one".