104642490 has 32 divisors (see below), whose sum is σ = 251755776. Its totient is φ = 27836480.

The previous prime is 104642467. The next prime is 104642491. The reversal of 104642490 is 94246401.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (104642491) 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 15 ways as a sum of consecutive naturals, for example, 8884 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (7867368).

Almost surely, 2^104642490 is an apocalyptic number.

104642490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

104642490 is an abundant number, since it is smaller than the sum of its proper divisors (147113286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104642490 is a wasteful number, since it uses less digits than its factorization.

104642490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8534.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 104642490 is about 10229.4911896927. The cubic root of 104642490 is about 471.2333533838.

Adding to 104642490 its reverse (94246401), we get a palindrome (198888891).

The spelling of 104642490 in words is "one hundred four million, six hundred forty-two thousand, four hundred ninety".