1240029 has 24 divisors (see below), whose sum is σ = 2125760.
Its totient is φ = 708588.
The previous prime is 1240027. The next prime is 1240039. The reversal of 1240029 is 9200421.
It is not a de Polignac number, because 1240029 - 21 = 1240027 is a prime.
It is a plaindrome in base 13.
It is a nialpdrome in base 3.
It is a junction number, because it is equal to n+sod(n) for n = 1239993 and 1240020.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1240021) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177144 + ... + 177150.
21240029 is an apocalyptic number.
It is an amenable number.
1240029 is a deficient number, since it is larger than the sum of its proper divisors (885731).
1240029 is an frugal number, since it uses more digits than its factorization.
1240029 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40 (or 10 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
The square root of 1240029 is about 1113.5658938743.
The cubic root of 1240029 is about 107.4345446132.
The spelling of 1240029 in words is "one million, two hundred forty thousand, twenty-nine".