4290840 has 128 divisors (see below), whose sum is σ = 14904000. Its totient is φ = 1096704.

The previous prime is 4290833. The next prime is 4290887. The reversal of 4290840 is 480924.

It is a super-2 number, since 2×4290840² = 36822615811200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 31252 + ... + 31388.

Almost surely, 2^4290840 is an apocalyptic number.

4290840 is a gapful number since it is divisible by the number (40) 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 4290840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7452000).

4290840 is an abundant number, since it is smaller than the sum of its proper divisors (10613160).

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

4290840 is a wasteful number, since it uses less digits than its factorization.

4290840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 4290840 is about 2071.4342857064. The cubic root of 4290840 is about 162.4977830072.

The spelling of 4290840 in words is "four million, two hundred ninety thousand, eight hundred forty".