1022420401 has 4 divisors (see below), whose sum is σ = 1023681904. Its totient is φ = 1021158900.

The previous prime is 1022420389. The next prime is 1022420411. The reversal of 1022420401 is 1040242201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1022420401 - 2⁵ = 1022420369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022420411) 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, 629535 + ... + 631156.

It is an arithmetic number, because the mean of its divisors is an integer number (255920476).

Almost surely, 2^1022420401 is an apocalyptic number.

It is an amenable number.

1022420401 is a deficient number, since it is larger than the sum of its proper divisors (1261503).

1022420401 is an equidigital number, since it uses as much as digits as its factorization.

1022420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261502.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1022420401 is about 31975.3092400996. The cubic root of 1022420401 is about 1007.4182997496.

Adding to 1022420401 its reverse (1040242201), we get a palindrome (2062662602).

It can be divided in two parts, 10224 and 20401, that added together give a square (30625 = 175²).

The spelling of 1022420401 in words is "one billion, twenty-two million, four hundred twenty thousand, four hundred one".