42897748 has 6 divisors (see below), whose sum is σ = 75071066. Its totient is φ = 21448872.

The previous prime is 42897731. The next prime is 42897761. The reversal of 42897748 is 84779824.

It can be written as a sum of positive squares in only one way, i.e., 32126224 + 10771524 = 5668^2 + 3282^2 .

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 as a sum of consecutive naturals, namely, 5362215 + ... + 5362222.

Almost surely, 2^42897748 is an apocalyptic number.

It is an amenable number.

42897748 is a deficient number, since it is larger than the sum of its proper divisors (32173318).

42897748 is a wasteful number, since it uses less digits than its factorization.

42897748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10724441 (or 10724439 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 42897748 is about 6549.6372418631. The cubic root of 42897748 is about 350.0618883757.

It can be divided in two parts, 428977 and 48, that added together give a square (429025 = 655²).

The spelling of 42897748 in words is "forty-two million, eight hundred ninety-seven thousand, seven hundred forty-eight".