1423420400 has 60 divisors (see below), whose sum is σ = 3499339272. Its totient is φ = 556120320.

The previous prime is 1423420391. The next prime is 1423420403. The reversal of 1423420400 is 40243241.

It is a super-2 number, since 2×1423420400² = 4052251270272320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423420403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24179 + ... + 58578.

Almost surely, 2^1423420400 is an apocalyptic number.

1423420400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423420400 is an abundant number, since it is smaller than the sum of its proper divisors (2075918872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423420400 is a wasteful number, since it uses less digits than its factorization.

1423420400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82818 (or 82807 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1423420400 is about 37728.2440619756. The cubic root of 1423420400 is about 1124.8926053861.

Adding to 1423420400 its reverse (40243241), we get a palindrome (1463663641).

The spelling of 1423420400 in words is "one billion, four hundred twenty-three million, four hundred twenty thousand, four hundred".