42191002 has 8 divisors (see below), whose sum is σ = 72327456. Its totient is φ = 18081852.

The previous prime is 42190999. The next prime is 42191011. The reversal of 42191002 is 20019124.

42191002 = 1214² + 1215² + ... + 1241².

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 1506808 + ... + 1506835.

It is an arithmetic number, because the mean of its divisors is an integer number (9040932).

Almost surely, 2^42191002 is an apocalyptic number.

42191002 is a deficient number, since it is larger than the sum of its proper divisors (30136454).

42191002 is a wasteful number, since it uses less digits than its factorization.

42191002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013652.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 42191002 is about 6495.4601068746. The cubic root of 42191002 is about 348.1287947546.

The spelling of 42191002 in words is "forty-two million, one hundred ninety-one thousand, two".