4212390 has 64 divisors (see below), whose sum is σ = 12450816. Its totient is φ = 888192.

The previous prime is 4212371. The next prime is 4212401. The reversal of 4212390 is 932124.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1959 + ... + 3501.

It is an arithmetic number, because the mean of its divisors is an integer number (194544).

Almost surely, 2^4212390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4212390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6225408).

4212390 is an abundant number, since it is smaller than the sum of its proper divisors (8238426).

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

4212390 is a wasteful number, since it uses less digits than its factorization.

4212390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4212390 is about 2052.4107775979. The cubic root of 4212390 is about 161.5013626649.

The spelling of 4212390 in words is "four million, two hundred twelve thousand, three hundred ninety".