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15031042 = 213578117
BaseRepresentation
bin111001010101…
…101100000010
31001021122201021
4321111230002
512321443132
61254100054
7241522165
oct71255402
931248637
1015031042
118537054
12504a62a
133163810
141dd3adc
1514bd997
hexe55b02

15031042 has 8 divisors (see below), whose sum is σ = 24280956. Its totient is φ = 6937392.

The previous prime is 15031031. The next prime is 15031057. The reversal of 15031042 is 24013051.

It can be written as a sum of positive squares in 2 ways, for example, as 13184161 + 1846881 = 3631^2 + 1359^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289033 + ... + 289084.

Almost surely, 215031042 is an apocalyptic number.

15031042 is a deficient number, since it is larger than the sum of its proper divisors (9249914).

15031042 is a wasteful number, since it uses less digits than its factorization.

15031042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578132.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 15031042 is about 3876.9887799683. The cubic root of 15031042 is about 246.7912150013.

Adding to 15031042 its reverse (24013051), we get a palindrome (39044093).

Subtracting 15031042 from its reverse (24013051), we obtain a square (8982009 = 29972).

The spelling of 15031042 in words is "fifteen million, thirty-one thousand, forty-two".

Divisors: 1 2 13 26 578117 1156234 7515521 15031042