3428678121 has 16 divisors (see below), whose sum is σ = 4988406720. Its totient is φ = 2077470720.

The previous prime is 3428678119. The next prime is 3428678161. The reversal of 3428678121 is 1218768243.

It is not a de Polignac number, because 3428678121 - 2¹ = 3428678119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3428678101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154365 + ... + 175173.

It is an arithmetic number, because the mean of its divisors is an integer number (311775420).

Almost surely, 2^3428678121 is an apocalyptic number.

It is an amenable number.

3428678121 is a deficient number, since it is larger than the sum of its proper divisors (1559728599).

3428678121 is a wasteful number, since it uses less digits than its factorization.

3428678121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25816.

The product of its digits is 129024, while the sum is 42.

The square root of 3428678121 is about 58554.9154298766. The cubic root of 3428678121 is about 1507.9105233012.

The spelling of 3428678121 in words is "three billion, four hundred twenty-eight million, six hundred seventy-eight thousand, one hundred twenty-one".