3515420121 has 4 divisors (see below), whose sum is σ = 4687226832. Its totient is φ = 2343613412.

The previous prime is 3515420099. The next prime is 3515420141. The reversal of 3515420121 is 1210245153.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 3515420121 - 2¹⁴ = 3515403737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3515420091 and 3515420100.

It is not an unprimeable number, because it can be changed into a prime (3515420141) 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, 585903351 + ... + 585903356.

It is an arithmetic number, because the mean of its divisors is an integer number (1171806708).

Almost surely, 2^3515420121 is an apocalyptic number.

It is an amenable number.

3515420121 is a deficient number, since it is larger than the sum of its proper divisors (1171806711).

3515420121 is a wasteful number, since it uses less digits than its factorization.

3515420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171806710.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 3515420121 is about 59290.9784115594. The cubic root of 3515420121 is about 1520.5209607678.

Adding to 3515420121 its reverse (1210245153), we get a palindrome (4725665274).

The spelling of 3515420121 in words is "three billion, five hundred fifteen million, four hundred twenty thousand, one hundred twenty-one".