42454340 has 24 divisors (see below), whose sum is σ = 90041112. Its totient is φ = 16812800.

The previous prime is 42454339. The next prime is 42454367. The reversal of 42454340 is 4345424.

It can be written as a sum of positive squares in 4 ways, for example, as 2334784 + 40119556 = 1528^2 + 6334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8489 + ... + 12528.

It is an arithmetic number, because the mean of its divisors is an integer number (3751713).

Almost surely, 2^42454340 is an apocalyptic number.

It is an amenable number.

42454340 is an abundant number, since it is smaller than the sum of its proper divisors (47586772).

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

42454340 is a wasteful number, since it uses less digits than its factorization.

42454340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21127 (or 21125 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 42454340 is about 6515.6995019721. The cubic root of 42454340 is about 348.8515828834.

Adding to 42454340 its reverse (4345424), we get a palindrome (46799764).

The spelling of 42454340 in words is "forty-two million, four hundred fifty-four thousand, three hundred forty".