4202113521 has 4 divisors (see below), whose sum is σ = 5602818032. Its totient is φ = 2801409012.

The previous prime is 4202113507. The next prime is 4202113529. The reversal of 4202113521 is 1253112024.

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 4202113521 - 2²⁵ = 4168559089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4202113529) 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, 700352251 + ... + 700352256.

It is an arithmetic number, because the mean of its divisors is an integer number (1400704508).

Almost surely, 2^4202113521 is an apocalyptic number.

It is an amenable number.

4202113521 is a deficient number, since it is larger than the sum of its proper divisors (1400704511).

4202113521 is a wasteful number, since it uses less digits than its factorization.

4202113521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400704510.

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

The square root of 4202113521 is about 64823.7111017257. The cubic root of 4202113521 is about 1613.6992367777.

Adding to 4202113521 its reverse (1253112024), we get a palindrome (5455225545).

The spelling of 4202113521 in words is "four billion, two hundred two million, one hundred thirteen thousand, five hundred twenty-one".