240021432293 has 2 divisors, whose sum is σ = 240021432294. Its totient is φ = 240021432292.

The previous prime is 240021432191. The next prime is 240021432323. The reversal of 240021432293 is 392234120042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236664736324 + 3356695969 = 486482^2 + 57937^2 .

It is a cyclic number.

It is not a de Polignac number, because 240021432293 - 2²² = 240017237989 is a prime.

It is a super-2 number, since 2×240021432293² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240021432493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120010716146 + 120010716147.

It is an arithmetic number, because the mean of its divisors is an integer number (120010716147).

Almost surely, 2^240021432293 is an apocalyptic number.

It is an amenable number.

240021432293 is a deficient number, since it is larger than the sum of its proper divisors (1).

240021432293 is an equidigital number, since it uses as much as digits as its factorization.

240021432293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 240021432293 in words is "two hundred forty billion, twenty-one million, four hundred thirty-two thousand, two hundred ninety-three".