1401000421 has 2 divisors, whose sum is σ = 1401000422. Its totient is φ = 1401000420.

The previous prime is 1401000401. The next prime is 1401000431. The reversal of 1401000421 is 1240001041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1268428225 + 132572196 = 35615^2 + 11514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401000421 - 2¹⁵ = 1400967653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401000401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700500210 + 700500211.

It is an arithmetic number, because the mean of its divisors is an integer number (700500211).

Almost surely, 2^1401000421 is an apocalyptic number.

It is an amenable number.

1401000421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401000421 is an equidigital number, since it uses as much as digits as its factorization.

1401000421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1401000421 is about 37429.9401682664. The cubic root of 1401000421 is about 1118.9553452807.

Adding to 1401000421 its reverse (1240001041), we get a palindrome (2641001462).

The spelling of 1401000421 in words is "one billion, four hundred one million, four hundred twenty-one", and thus it is an aban number.