1020420412423 has 4 divisors (see below), whose sum is σ = 1020465286848. Its totient is φ = 1020375538000.

The previous prime is 1020420412411. The next prime is 1020420412441. The reversal of 1020420412423 is 3242140240201.

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

It is a cyclic number.

It is not a de Polignac number, because 1020420412423 - 2⁵ = 1020420412391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020420442423) 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, 22403086 + ... + 22448587.

It is an arithmetic number, because the mean of its divisors is an integer number (255116321712).

Almost surely, 2^{1020420412423} is an apocalyptic number.

1020420412423 is a deficient number, since it is larger than the sum of its proper divisors (44874425).

1020420412423 is an equidigital number, since it uses as much as digits as its factorization.

1020420412423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44874424.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1020420412423 its reverse (3242140240201), we get a palindrome (4262560652624).

The spelling of 1020420412423 in words is "one trillion, twenty billion, four hundred twenty million, four hundred twelve thousand, four hundred twenty-three".