42251002 has 4 divisors (see below), whose sum is σ = 63376506. Its totient is φ = 21125500.

The previous prime is 42250997. The next prime is 42251009. The reversal of 42251002 is 20015224.

42251002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 3798601 = 6201^2 + 1949^2 .

It is not an unprimeable number, because it can be changed into a prime (42251009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562749 + ... + 10562752.

Almost surely, 2^42251002 is an apocalyptic number.

42251002 is a deficient number, since it is larger than the sum of its proper divisors (21125504).

42251002 is a wasteful number, since it uses less digits than its factorization.

42251002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21125503.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42251002 is about 6500.0770764661. The cubic root of 42251002 is about 348.2937417260.

Adding to 42251002 its reverse (20015224), we get a palindrome (62266226).

The spelling of 42251002 in words is "forty-two million, two hundred fifty-one thousand, two".