102146044 has 96 divisors (see below), whose sum is σ = 243403776. Its totient is φ = 36218880.

The previous prime is 102146041. The next prime is 102146089. The reversal of 102146044 is 440641201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102146041) 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 31 ways as a sum of consecutive naturals, for example, 388257 + ... + 388519.

It is an arithmetic number, because the mean of its divisors is an integer number (2535456).

Almost surely, 2^102146044 is an apocalyptic number.

102146044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102146044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121701888).

102146044 is an abundant number, since it is smaller than the sum of its proper divisors (141257732).

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

102146044 is a wasteful number, since it uses less digits than its factorization.

102146044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 102146044 is about 10106.7326075246. The cubic root of 102146044 is about 467.4557617781.

Adding to 102146044 its reverse (440641201), we get a palindrome (542787245).

The spelling of 102146044 in words is "one hundred two million, one hundred forty-six thousand, forty-four".