101120409 has 12 divisors (see below), whose sum is σ = 157298596. Its totient is φ = 62227872.

The previous prime is 101120407. The next prime is 101120429. The reversal of 101120409 is 904021101.

It can be written as a sum of positive squares in 2 ways, for example, as 13286025 + 87834384 = 3645^2 + 9372^2 .

It is not a de Polignac number, because 101120409 - 2¹ = 101120407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101120391 and 101120400.

It is not an unprimeable number, because it can be changed into a prime (101120407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432022 + ... + 432255.

Almost surely, 2^101120409 is an apocalyptic number.

It is an amenable number.

101120409 is a deficient number, since it is larger than the sum of its proper divisors (56178187).

101120409 is a wasteful number, since it uses less digits than its factorization.

101120409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864296 (or 864293 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 101120409 is about 10055.8644083937. The cubic root of 101120409 is about 465.8859419259.

The spelling of 101120409 in words is "one hundred one million, one hundred twenty thousand, four hundred nine".