1401421201 has 4 divisors (see below), whose sum is σ = 1449746100. Its totient is φ = 1353096304.

The previous prime is 1401421199. The next prime is 1401421237. The reversal of 1401421201 is 1021241041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 573363025 + 828058176 = 23945^2 + 28776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401421201 - 2¹ = 1401421199 is a prime.

It is a super-2 number, since 2×1401421201² = 3927962765224564802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401421271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24162406 + ... + 24162463.

It is an arithmetic number, because the mean of its divisors is an integer number (362436525).

Almost surely, 2^1401421201 is an apocalyptic number.

It is an amenable number.

1401421201 is a deficient number, since it is larger than the sum of its proper divisors (48324899).

1401421201 is an equidigital number, since it uses as much as digits as its factorization.

1401421201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48324898.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1401421201 is about 37435.5606475982. The cubic root of 1401421201 is about 1119.0673573577.

Adding to 1401421201 its reverse (1021241041), we get a palindrome (2422662242).

The spelling of 1401421201 in words is "one billion, four hundred one million, four hundred twenty-one thousand, two hundred one".