26442140 has 48 divisors (see below), whose sum is σ = 59566752. Its totient is φ = 9824256.

The previous prime is 26442139. The next prime is 26442149. The reversal of 26442140 is 4124462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26442149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27752 + ... + 28688.

It is an arithmetic number, because the mean of its divisors is an integer number (1240974).

Almost surely, 2^26442140 is an apocalyptic number.

26442140 is a gapful number since it is divisible by the number (20) 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 26442140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29783376).

26442140 is an abundant number, since it is smaller than the sum of its proper divisors (33124612).

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

26442140 is a wasteful number, since it uses less digits than its factorization.

26442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 26442140 is about 5142.1921395452. The cubic root of 26442140 is about 297.9194563341.

The spelling of 26442140 in words is "twenty-six million, four hundred forty-two thousand, one hundred forty".