100722342 has 24 divisors (see below), whose sum is σ = 234334296. Its totient is φ = 28777728.

The previous prime is 100722341. The next prime is 100722367. The reversal of 100722342 is 243227001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100722341) 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 11 ways as a sum of consecutive naturals, for example, 171003 + ... + 171590.

It is an arithmetic number, because the mean of its divisors is an integer number (9763929).

Almost surely, 2^100722342 is an apocalyptic number.

100722342 is an abundant number, since it is smaller than the sum of its proper divisors (133611954).

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

100722342 is a wasteful number, since it uses less digits than its factorization.

100722342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342612 (or 342605 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 100722342 is about 10036.0521122601. The cubic root of 100722342 is about 465.2738079858.

Adding to 100722342 its reverse (243227001), we get a palindrome (343949343).

The spelling of 100722342 in words is "one hundred million, seven hundred twenty-two thousand, three hundred forty-two".