1513400421 has 8 divisors (see below), whose sum is σ = 2173087840. Its totient is φ = 931323312.

The previous prime is 1513400419. The next prime is 1513400477. The reversal of 1513400421 is 1240043151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1513400421 - 2¹ = 1513400419 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 (1513400821) 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, 19402531 + ... + 19402608.

It is an arithmetic number, because the mean of its divisors is an integer number (271635980).

Almost surely, 2^1513400421 is an apocalyptic number.

It is an amenable number.

1513400421 is a deficient number, since it is larger than the sum of its proper divisors (659687419).

1513400421 is a wasteful number, since it uses less digits than its factorization.

1513400421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38805155.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1513400421 is about 38902.4474936989. The cubic root of 1513400421 is about 1148.1129533609.

Adding to 1513400421 its reverse (1240043151), we get a palindrome (2753443572).

The spelling of 1513400421 in words is "one billion, five hundred thirteen million, four hundred thousand, four hundred twenty-one".