1020401401 has 4 divisors (see below), whose sum is σ = 1037696400. Its totient is φ = 1003106404.

The previous prime is 1020401383. The next prime is 1020401407. The reversal of 1020401401 is 1041040201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1041040201 = 15671 ⋅66431.

It is a cyclic number.

It is not a de Polignac number, because 1020401401 - 2⁷ = 1020401273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020401407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8647411 + ... + 8647528.

It is an arithmetic number, because the mean of its divisors is an integer number (259424100).

Almost surely, 2^1020401401 is an apocalyptic number.

It is an amenable number.

1020401401 is a deficient number, since it is larger than the sum of its proper divisors (17294999).

1020401401 is an equidigital number, since it uses as much as digits as its factorization.

1020401401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17294998.

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

The square root of 1020401401 is about 31943.7224036273. The cubic root of 1020401401 is about 1006.7547377858.

Adding to 1020401401 its reverse (1041040201), we get a palindrome (2061441602).

The spelling of 1020401401 in words is "one billion, twenty million, four hundred one thousand, four hundred one".