1401021401 has 4 divisors (see below), whose sum is σ = 1508792292. Its totient is φ = 1293250512.

The previous prime is 1401021341. The next prime is 1401021439. The reversal of 1401021401 is 1041201041.

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 631014400 + 770007001 = 25120^2 + 27749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401021401 - 2²² = 1396827097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401026401) 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, 53885426 + ... + 53885451.

It is an arithmetic number, because the mean of its divisors is an integer number (377198073).

Almost surely, 2^1401021401 is an apocalyptic number.

It is an amenable number.

1401021401 is a deficient number, since it is larger than the sum of its proper divisors (107770891).

1401021401 is a wasteful number, since it uses less digits than its factorization.

1401021401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107770890.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1401021401 is about 37430.2204241439. The cubic root of 1401021401 is about 1118.9609307099.

Adding to 1401021401 its reverse (1041201041), we get a palindrome (2442222442).

The spelling of 1401021401 in words is "one billion, four hundred one million, twenty-one thousand, four hundred one".