102440126 has 4 divisors (see below), whose sum is σ = 153660192. Its totient is φ = 51220062.

The previous prime is 102440101. The next prime is 102440131. The reversal of 102440126 is 621044201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621044201 = 79 ⋅7861319.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 102440098 and 102440107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25610030 + ... + 25610033.

It is an arithmetic number, because the mean of its divisors is an integer number (38415048).

Almost surely, 2^102440126 is an apocalyptic number.

102440126 is a deficient number, since it is larger than the sum of its proper divisors (51220066).

102440126 is an equidigital number, since it uses as much as digits as its factorization.

102440126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51220065.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 102440126 is about 10121.2709676206. The cubic root of 102440126 is about 467.9039390587.

Adding to 102440126 its reverse (621044201), we get a palindrome (723484327).

The spelling of 102440126 in words is "one hundred two million, four hundred forty thousand, one hundred twenty-six".