42428648 has 8 divisors (see below), whose sum is σ = 79553730. Its totient is φ = 21214320.

The previous prime is 42428647. The next prime is 42428657. The reversal of 42428648 is 84682424.

It can be written as a sum of positive squares in only one way, i.e., 30052324 + 12376324 = 5482^2 + 3518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42428648² = 3600380342215808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42428647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2651783 + ... + 2651798.

Almost surely, 2^42428648 is an apocalyptic number.

It is an amenable number.

42428648 is a deficient number, since it is larger than the sum of its proper divisors (37125082).

42428648 is a wasteful number, since it uses less digits than its factorization.

42428648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303587 (or 5303583 counting only the distinct ones).

The product of its digits is 98304, while the sum is 38.

The square root of 42428648 is about 6513.7276578009. The cubic root of 42428648 is about 348.7811974335.

The spelling of 42428648 in words is "forty-two million, four hundred twenty-eight thousand, six hundred forty-eight".