2539420 has 24 divisors (see below), whose sum is σ = 5743584. Its totient is φ = 937536.

The previous prime is 2539399. The next prime is 2539423. The reversal of 2539420 is 249352.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4624 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (239316).

2^2539420 is an apocalyptic number.

2539420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2539420 is an abundant number, since it is smaller than the sum of its proper divisors (3204164).

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

2539420 is a wasteful number, since it uses less digits than its factorization.

2539420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9789 (or 9787 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2539420 is about 1593.5557724786. Note that the first 3 decimals coincide. The cubic root of 2539420 is about 136.4305129204.

The spelling of 2539420 in words is "two million, five hundred thirty-nine thousand, four hundred twenty".