34905121 has 4 divisors (see below), whose sum is σ = 35716912. Its totient is φ = 34093332.

The previous prime is 34905103. The next prime is 34905127. The reversal of 34905121 is 12150943.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12150943 = 7 ⋅1735849.

It is a cyclic number.

It is not a de Polignac number, because 34905121 - 2⁵ = 34905089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34905127) 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, 405831 + ... + 405916.

It is an arithmetic number, because the mean of its divisors is an integer number (8929228).

Almost surely, 2^34905121 is an apocalyptic number.

It is an amenable number.

34905121 is a deficient number, since it is larger than the sum of its proper divisors (811791).

34905121 is an equidigital number, since it uses as much as digits as its factorization.

34905121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811790.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 34905121 is about 5908.0556023111. The cubic root of 34905121 is about 326.8107868629.

The spelling of 34905121 in words is "thirty-four million, nine hundred five thousand, one hundred twenty-one".