3975420 has 48 divisors (see below), whose sum is σ = 11329920. Its totient is φ = 1041216.

The previous prime is 3975383. The next prime is 3975437. The reversal of 3975420 is 245793.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 2979 + ... + 4101.

It is an arithmetic number, because the mean of its divisors is an integer number (236040).

Almost surely, 2^3975420 is an apocalyptic number.

3975420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3975420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5664960).

3975420 is an abundant number, since it is smaller than the sum of its proper divisors (7354500).

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

3975420 is a wasteful number, since it uses less digits than its factorization.

3975420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 3975420 is about 1993.8455306267. The cubic root of 3975420 is about 158.4142842439.

The spelling of 3975420 in words is "three million, nine hundred seventy-five thousand, four hundred twenty".