40030102421 has 2 divisors, whose sum is σ = 40030102422. Its totient is φ = 40030102420.

The previous prime is 40030102397. The next prime is 40030102459. The reversal of 40030102421 is 12420103004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35611841521 + 4418260900 = 188711^2 + 66470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40030102421 is a prime.

It is a super-2 number, since 2×40030102421² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40030102421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40030102921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015051210 + 20015051211.

It is an arithmetic number, because the mean of its divisors is an integer number (20015051211).

Almost surely, 2^40030102421 is an apocalyptic number.

It is an amenable number.

40030102421 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030102421 is an equidigital number, since it uses as much as digits as its factorization.

40030102421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 40030102421 its reverse (12420103004), we get a palindrome (52450205425).

The spelling of 40030102421 in words is "forty billion, thirty million, one hundred two thousand, four hundred twenty-one".