42197925 has 48 divisors (see below), whose sum is σ = 86994432. Its totient is φ = 17534400.

The previous prime is 42197891. The next prime is 42197951. The reversal of 42197925 is 52979124.

42197925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42197925 - 2⁶ = 42197861 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2122 + ... + 9428.

It is an arithmetic number, because the mean of its divisors is an integer number (1812384).

Almost surely, 2^42197925 is an apocalyptic number.

It is an amenable number.

42197925 is an abundant number, since it is smaller than the sum of its proper divisors (44796507).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42197925 is a wasteful number, since it uses less digits than its factorization.

42197925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338 (or 7333 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 42197925 is about 6495.9929956859. The cubic root of 42197925 is about 348.1478348637.

It can be divided in two parts, 421 and 97925, that added together give a triangular number (98346 = T₄₄₃).

The spelling of 42197925 in words is "forty-two million, one hundred ninety-seven thousand, nine hundred twenty-five".