421424022001 has 6 divisors (see below), whose sum is σ = 447671885270. Its totient is φ = 396634373376.

The previous prime is 421424021999. The next prime is 421424022023. The reversal of 421424022001 is 100220424124.

It can be written as a sum of positive squares in 3 ways, for example, as 318253939600 + 103170082401 = 564140^2 + 321201^2 .

It is not a de Polignac number, because 421424022001 - 2¹ = 421424021999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421424022101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729107016 + ... + 729107593.

Almost surely, 2^421424022001 is an apocalyptic number.

It is an amenable number.

421424022001 is a deficient number, since it is larger than the sum of its proper divisors (26247863269).

421424022001 is a wasteful number, since it uses less digits than its factorization.

421424022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458214643 (or 1458214626 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 421424022001 its reverse (100220424124), we get a palindrome (521644446125).

The spelling of 421424022001 in words is "four hundred twenty-one billion, four hundred twenty-four million, twenty-two thousand, one".