1042101010421 has 2 divisors, whose sum is σ = 1042101010422. Its totient is φ = 1042101010420.

The previous prime is 1042101010399. The next prime is 1042101010427. The reversal of 1042101010421 is 1240101012401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 949708720900 + 92392289521 = 974530^2 + 303961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042101010421 is a prime.

It is a super-3 number, since 3×1042101010421³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042101010421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042101010427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521050505210 + 521050505211.

It is an arithmetic number, because the mean of its divisors is an integer number (521050505211).

Almost surely, 2^{1042101010421} is an apocalyptic number.

It is an amenable number.

1042101010421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042101010421 is an equidigital number, since it uses as much as digits as its factorization.

1042101010421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1042101010421 its reverse (1240101012401), we get a palindrome (2282202022822).

The spelling of 1042101010421 in words is "one trillion, forty-two billion, one hundred one million, ten thousand, four hundred twenty-one".