42131002 has 4 divisors (see below), whose sum is σ = 63196506. Its totient is φ = 21065500.

The previous prime is 42130993. The next prime is 42131021. The reversal of 42131002 is 20013124.

42131002 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., 26615281 + 15515721 = 5159^2 + 3939^2 .

It is an unprimeable number.

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, 10532749 + ... + 10532752.

Almost surely, 2^42131002 is an apocalyptic number.

42131002 is a deficient number, since it is larger than the sum of its proper divisors (21065504).

42131002 is a wasteful number, since it uses less digits than its factorization.

42131002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21065503.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 42131002 is about 6490.8398532085. The cubic root of 42131002 is about 347.9636913279.

Adding to 42131002 its reverse (20013124), we get a palindrome (62144126).

It can be divided in two parts, 42 and 131002, that added together give a square (131044 = 362²).

The spelling of 42131002 in words is "forty-two million, one hundred thirty-one thousand, two".