42453140 has 12 divisors (see below), whose sum is σ = 89151636. Its totient is φ = 16981248.

The previous prime is 42453139. The next prime is 42453157. The reversal of 42453140 is 4135424.

It can be written as a sum of positive squares in 2 ways, for example, as 9229444 + 33223696 = 3038^2 + 5764^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061309 + ... + 1061348.

It is an arithmetic number, because the mean of its divisors is an integer number (7429303).

Almost surely, 2^42453140 is an apocalyptic number.

It is an amenable number.

42453140 is an abundant number, since it is smaller than the sum of its proper divisors (46698496).

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

42453140 is a wasteful number, since it uses less digits than its factorization.

42453140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122666 (or 2122664 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42453140 is about 6515.6074160434. The cubic root of 42453140 is about 348.8482960122.

Adding to 42453140 its reverse (4135424), we get a palindrome (46588564).

The spelling of 42453140 in words is "forty-two million, four hundred fifty-three thousand, one hundred forty".