42480745 has 8 divisors (see below), whose sum is σ = 51110280. Its totient is φ = 33895680.

The previous prime is 42480743. The next prime is 42480787. The reversal of 42480745 is 54708424.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1763584 + 40717161 = 1328^2 + 6381^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42480745 - 2¹ = 42480743 is a prime.

It is a super-2 number, since 2×42480745² = 3609227391510050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42480745.

It is not an unprimeable number, because it can be changed into a prime (42480743) 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, 8976 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (6388785).

Almost surely, 2^42480745 is an apocalyptic number.

It is an amenable number.

42480745 is a deficient number, since it is larger than the sum of its proper divisors (8629535).

42480745 is a wasteful number, since it uses less digits than its factorization.

42480745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22235.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 42480745 is about 6517.7254468104. The cubic root of 42480745 is about 348.9238920747.

The spelling of 42480745 in words is "forty-two million, four hundred eighty thousand, seven hundred forty-five".