42450740 has 24 divisors (see below), whose sum is σ = 89669160. Its totient is φ = 16880768.

The previous prime is 42450713. The next prime is 42450743. The reversal of 42450740 is 4705424.

It can be written as a sum of positive squares in 4 ways, for example, as 23406244 + 19044496 = 4838^2 + 4364^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42450743) 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, 2675 + ... + 9594.

It is an arithmetic number, because the mean of its divisors is an integer number (3736215).

Almost surely, 2^42450740 is an apocalyptic number.

It is an amenable number.

42450740 is an abundant number, since it is smaller than the sum of its proper divisors (47218420).

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

42450740 is a wasteful number, since it uses less digits than its factorization.

42450740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12451 (or 12449 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 42450740 is about 6515.4232402815. The cubic root of 42450740 is about 348.8417220839.

The spelling of 42450740 in words is "forty-two million, four hundred fifty thousand, seven hundred forty".