421140513 has 4 divisors (see below), whose sum is σ = 561520688. Its totient is φ = 280760340.

The previous prime is 421140481. The next prime is 421140527. The reversal of 421140513 is 315041124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 421140513 - 2⁵ = 421140481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421140513.

It is not an unprimeable number, because it can be changed into a prime (421140593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70190083 + ... + 70190088.

It is an arithmetic number, because the mean of its divisors is an integer number (140380172).

Almost surely, 2^421140513 is an apocalyptic number.

It is an amenable number.

421140513 is a deficient number, since it is larger than the sum of its proper divisors (140380175).

421140513 is a wasteful number, since it uses less digits than its factorization.

421140513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140380174.

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

The square root of 421140513 is about 20521.7083353214. The cubic root of 421140513 is about 749.5644956080.

Adding to 421140513 its reverse (315041124), we get a palindrome (736181637).

The spelling of 421140513 in words is "four hundred twenty-one million, one hundred forty thousand, five hundred thirteen".