42124802 has 4 divisors (see below), whose sum is σ = 63187206. Its totient is φ = 21062400.

The previous prime is 42124787. The next prime is 42124811. The reversal of 42124802 is 20842124.

It is a happy number.

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., 28955161 + 13169641 = 5381^2 + 3629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10531199 + ... + 10531202.

Almost surely, 2^42124802 is an apocalyptic number.

42124802 is a deficient number, since it is larger than the sum of its proper divisors (21062404).

42124802 is a wasteful number, since it uses less digits than its factorization.

42124802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21062403.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 42124802 is about 6490.3622395056. The cubic root of 42124802 is about 347.9466217068.

Adding to 42124802 its reverse (20842124), we get a palindrome (62966926).

The spelling of 42124802 in words is "forty-two million, one hundred twenty-four thousand, eight hundred two".