2542428 has 120 divisors (see below), whose sum is σ = 8131200. Its totient is φ = 676512.

The previous prime is 2542417. The next prime is 2542429. The reversal of 2542428 is 8242452.

It is a happy number.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2542429) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43063 + ... + 43121.

It is an arithmetic number, because the mean of its divisors is an integer number (67760).

2^2542428 is an apocalyptic number.

2542428 is a gapful number since it is divisible by the number (28) 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 2542428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4065600).

2542428 is an abundant number, since it is smaller than the sum of its proper divisors (5588772).

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

2542428 is a wasteful number, since it uses less digits than its factorization.

2542428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 90 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 2542428 is about 1594.4992944495. The cubic root of 2542428 is about 136.4843600001.

It can be divided in two parts, 25424 and 28, that added together give a palindrome (25452).

The spelling of 2542428 in words is "two million, five hundred forty-two thousand, four hundred twenty-eight".