7042121825 has 12 divisors (see below), whose sum is σ = 8935307568. Its totient is φ = 5502680400.

The previous prime is 7042121797. The next prime is 7042121831. The reversal of 7042121825 is 5281212407.

It is not a de Polignac number, because 7042121825 - 2¹⁰ = 7042120801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7042121791 and 7042121800.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3274331 + ... + 3276480.

It is an arithmetic number, because the mean of its divisors is an integer number (744608964).

Almost surely, 2^7042121825 is an apocalyptic number.

It is an amenable number.

7042121825 is a deficient number, since it is larger than the sum of its proper divisors (1893185743).

7042121825 is a wasteful number, since it uses less digits than its factorization.

7042121825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550864 (or 6550859 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 7042121825 is about 83917.3511557652. The cubic root of 7042121825 is about 1916.7604718635.

The spelling of 7042121825 in words is "seven billion, forty-two million, one hundred twenty-one thousand, eight hundred twenty-five".