401421012541 has 2 divisors, whose sum is σ = 401421012542. Its totient is φ = 401421012540.

The previous prime is 401421012493. The next prime is 401421012611. The reversal of 401421012541 is 145210124104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307925108100 + 93495904441 = 554910^2 + 305771^2 .

It is a cyclic number.

It is not a de Polignac number, because 401421012541 - 2⁷ = 401421012413 is a prime.

It is a super-2 number, since 2×401421012541² (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 (401421010541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200710506270 + 200710506271.

It is an arithmetic number, because the mean of its divisors is an integer number (200710506271).

Almost surely, 2^401421012541 is an apocalyptic number.

It is an amenable number.

401421012541 is a deficient number, since it is larger than the sum of its proper divisors (1).

401421012541 is an equidigital number, since it uses as much as digits as its factorization.

401421012541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 401421012541 its reverse (145210124104), we get a palindrome (546631136645).

The spelling of 401421012541 in words is "four hundred one billion, four hundred twenty-one million, twelve thousand, five hundred forty-one".