42981207 has 8 divisors (see below), whose sum is σ = 57834480. Its totient is φ = 28391040.

The previous prime is 42981203. The next prime is 42981247. The reversal of 42981207 is 70218924.

It is a happy number.

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

It is not a de Polignac number, because 42981207 - 2² = 42981203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42981203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65394 + ... + 66047.

It is an arithmetic number, because the mean of its divisors is an integer number (7229310).

Almost surely, 2^42981207 is an apocalyptic number.

42981207 is a deficient number, since it is larger than the sum of its proper divisors (14853273).

42981207 is a wasteful number, since it uses less digits than its factorization.

42981207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131553.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42981207 is about 6556.0054148849. The cubic root of 42981207 is about 350.2887603381.

The spelling of 42981207 in words is "forty-two million, nine hundred eighty-one thousand, two hundred seven".