42490853866 has 16 divisors (see below), whose sum is σ = 64445730624. Its totient is φ = 21010123744.

The previous prime is 42490853863. The next prime is 42490853869. The reversal of 42490853866 is 66835809424.

42490853866 = T₁₇₈₄₄ + T₁₇₈₄₅ + ... + T₁₈₁₀₆.

It is an interprime number because it is at equal distance from previous prime (42490853863) and next prime (42490853869).

It is not an unprimeable number, because it can be changed into a prime (42490853863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222760 + ... + 366883.

It is an arithmetic number, because the mean of its divisors is an integer number (4027858164).

Almost surely, 2^42490853866 is an apocalyptic number.

42490853866 is a deficient number, since it is larger than the sum of its proper divisors (21954876758).

42490853866 is a wasteful number, since it uses less digits than its factorization.

42490853866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590045.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 42490853866 in words is "forty-two billion, four hundred ninety million, eight hundred fifty-three thousand, eight hundred sixty-six".