1423240400 has 30 divisors (see below), whose sum is σ = 3419336022. Its totient is φ = 569296000.

The previous prime is 1423240397. The next prime is 1423240433. The reversal of 1423240400 is 40423241.

It can be written as a sum of positive squares in 3 ways, for example, as 362826304 + 1060414096 = 19048^2 + 32564^2 .

It is a super-2 number, since 2×1423240400² = 4051226472384320000, 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 an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1778651 + ... + 1779450.

Almost surely, 2^1423240400 is an apocalyptic number.

1423240400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423240400 is an abundant number, since it is smaller than the sum of its proper divisors (1996095622).

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

1423240400 is a wasteful number, since it uses less digits than its factorization.

1423240400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3558119 (or 3558108 counting only the distinct ones).

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

The square root of 1423240400 is about 37725.8585058047. The cubic root of 1423240400 is about 1124.8451869274.

Adding to 1423240400 its reverse (40423241), we get a palindrome (1463663641).

The spelling of 1423240400 in words is "one billion, four hundred twenty-three million, two hundred forty thousand, four hundred".