140121041 has 4 divisors (see below), whose sum is σ = 140248500. Its totient is φ = 139993584.

The previous prime is 140120999. The next prime is 140121049.

140121041 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71893441 + 68227600 = 8479^2 + 8260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140121041 is a prime.

It is a super-2 number, since 2×140121041² = 39267812261847362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140121049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62066 + ... + 64283.

It is an arithmetic number, because the mean of its divisors is an integer number (35062125).

Almost surely, 2^140121041 is an apocalyptic number.

It is an amenable number.

140121041 is a deficient number, since it is larger than the sum of its proper divisors (127459).

140121041 is a wasteful number, since it uses less digits than its factorization.

140121041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127458.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 140121041 is about 11837.2733769226. The cubic root of 140121041 is about 519.3990110506.

The spelling of 140121041 in words is "one hundred forty million, one hundred twenty-one thousand, forty-one".