102145722 has 16 divisors (see below), whose sum is σ = 233476032. Its totient is φ = 29184480.

The previous prime is 102145699. The next prime is 102145723. The reversal of 102145722 is 227541201.

It is a junction number, because it is equal to n+sod(n) for n = 102145692 and 102145701.

It is not an unprimeable number, because it can be changed into a prime (102145723) 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, 1215979 + ... + 1216062.

It is an arithmetic number, because the mean of its divisors is an integer number (14592252).

Almost surely, 2^102145722 is an apocalyptic number.

102145722 is an abundant number, since it is smaller than the sum of its proper divisors (131330310).

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

102145722 is a wasteful number, since it uses less digits than its factorization.

102145722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432053.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 102145722 is about 10106.7166775368. The cubic root of 102145722 is about 467.4552705830.

Adding to 102145722 its reverse (227541201), we get a palindrome (329686923).

The spelling of 102145722 in words is "one hundred two million, one hundred forty-five thousand, seven hundred twenty-two".