102406441 has 4 divisors (see below), whose sum is σ = 104338692. Its totient is φ = 100474192.

The previous prime is 102406439. The next prime is 102406471. The reversal of 102406441 is 144604201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144604201 = 7 ⋅20657743.

It can be written as a sum of positive squares in 2 ways, for example, as 28944400 + 73462041 = 5380^2 + 8571^2 .

It is a cyclic number.

It is not a de Polignac number, because 102406441 - 2¹ = 102406439 is a prime.

It is a super-3 number, since 3×102406441³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102406471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966046 + ... + 966151.

It is an arithmetic number, because the mean of its divisors is an integer number (26084673).

Almost surely, 2^102406441 is an apocalyptic number.

It is an amenable number.

102406441 is a deficient number, since it is larger than the sum of its proper divisors (1932251).

102406441 is an equidigital number, since it uses as much as digits as its factorization.

102406441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932250.

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

The square root of 102406441 is about 10119.6067611345. The cubic root of 102406441 is about 467.8526470742.

The spelling of 102406441 in words is "one hundred two million, four hundred six thousand, four hundred forty-one".