42454120 has 16 divisors (see below), whose sum is σ = 95521860. Its totient is φ = 16981632.

The previous prime is 42454073. The next prime is 42454121. The reversal of 42454120 is 2145424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38365636 + 4088484 = 6194^2 + 2022^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42454091 and 42454100.

It is not an unprimeable number, because it can be changed into a prime (42454121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530637 + ... + 530716.

Almost surely, 2^42454120 is an apocalyptic number.

42454120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42454120 is an abundant number, since it is smaller than the sum of its proper divisors (53067740).

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

42454120 is a wasteful number, since it uses less digits than its factorization.

42454120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061364 (or 1061360 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42454120 is about 6515.6826196493. The cubic root of 42454120 is about 348.8509802949.

Adding to 42454120 its reverse (2145424), we get a palindrome (44599544).

The spelling of 42454120 in words is "forty-two million, four hundred fifty-four thousand, one hundred twenty".