42501022 has 4 divisors (see below), whose sum is σ = 63751536. Its totient is φ = 21250510.

The previous prime is 42501013. The next prime is 42501023. The reversal of 42501022 is 22010524.

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

It is a junction number, because it is equal to n+sod(n) for n = 42500987 and 42501005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42501023) by changing a digit.

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, 10625254 + ... + 10625257.

It is an arithmetic number, because the mean of its divisors is an integer number (15937884).

Almost surely, 2^42501022 is an apocalyptic number.

42501022 is a deficient number, since it is larger than the sum of its proper divisors (21250514).

42501022 is a wasteful number, since it uses less digits than its factorization.

42501022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21250513.

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

The square root of 42501022 is about 6519.2807885533. The cubic root of 42501022 is about 348.9793996100.

Adding to 42501022 its reverse (22010524), we get a palindrome (64511546).

The spelling of 42501022 in words is "forty-two million, five hundred one thousand, twenty-two".