1421413520 has 40 divisors (see below), whose sum is σ = 3499188984. Its totient is φ = 535119872.

The previous prime is 1421413489. The next prime is 1421413523. The reversal of 1421413520 is 253141241.

It can be written as a sum of positive squares in 4 ways, for example, as 488233216 + 933180304 = 22096^2 + 30548^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1421413523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521219 + ... + 523938.

Almost surely, 2^1421413520 is an apocalyptic number.

1421413520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421413520 is an abundant number, since it is smaller than the sum of its proper divisors (2077775464).

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

1421413520 is a wasteful number, since it uses less digits than its factorization.

1421413520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045187 (or 1045181 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1421413520 is about 37701.6381606954. The cubic root of 1421413520 is about 1124.3636948209.

Adding to 1421413520 its reverse (253141241), we get a palindrome (1674554761).

The spelling of 1421413520 in words is "one billion, four hundred twenty-one million, four hundred thirteen thousand, five hundred twenty".