1426403520 has 280 divisors, whose sum is σ = 5129381664. Its totient is φ = 376233984.

The previous prime is 1426403497. The next prime is 1426403521. The reversal of 1426403520 is 253046241.

1426403520 is a `hidden beast` number, since 14 + 2 + 640 + 3 + 5 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1426403521) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2928717 + ... + 2929203.

Almost surely, 2^1426403520 is an apocalyptic number.

1426403520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1426403520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2564690832).

1426403520 is an abundant number, since it is smaller than the sum of its proper divisors (3702978144).

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

1426403520 is a wasteful number, since it uses less digits than its factorization.

1426403520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1426403520 is about 37767.7576776806. The cubic root of 1426403520 is about 1125.6778847822.

Adding to 1426403520 its reverse (253046241), we get a palindrome (1679449761).

The spelling of 1426403520 in words is "one billion, four hundred twenty-six million, four hundred three thousand, five hundred twenty".