42420302 has 4 divisors (see below), whose sum is σ = 63630456. Its totient is φ = 21210150.

The previous prime is 42420271. The next prime is 42420311. The reversal of 42420302 is 20302424.

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

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, 10605074 + ... + 10605077.

It is an arithmetic number, because the mean of its divisors is an integer number (15907614).

Almost surely, 2^42420302 is an apocalyptic number.

42420302 is a deficient number, since it is larger than the sum of its proper divisors (21210154).

42420302 is a wasteful number, since it uses less digits than its factorization.

42420302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21210153.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42420302 is about 6513.0869793056. The cubic root of 42420302 is about 348.7583267326.

Adding to 42420302 its reverse (20302424), we get a palindrome (62722726).

The spelling of 42420302 in words is "forty-two million, four hundred twenty thousand, three hundred two".