42246869 has 6 divisors (see below), whose sum is σ = 49144374. Its totient is φ = 36211560.

The previous prime is 42246863. The next prime is 42246877. The reversal of 42246869 is 96864224.

It can be written as a sum of positive squares in only one way, i.e., 36747844 + 5499025 = 6062^2 + 2345^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42246869 is a prime.

It is a super-2 number, since 2×42246869² = 3569595880606322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42246863) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 431042 + ... + 431139.

It is an arithmetic number, because the mean of its divisors is an integer number (8190729).

Almost surely, 2^42246869 is an apocalyptic number.

42246869 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42246869 is a deficient number, since it is larger than the sum of its proper divisors (6897505).

42246869 is an equidigital number, since it uses as much as digits as its factorization.

42246869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862195 (or 862188 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 42246869 is about 6499.7591493839. The cubic root of 42246869 is about 348.2823846385.

The spelling of 42246869 in words is "forty-two million, two hundred forty-six thousand, eight hundred sixty-nine".