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1425931 = 131923251
BaseRepresentation
bin101011100001000001011
32200110000021
411130020023
5331112211
650321311
715056143
oct5341013
92613007
101425931
11894361
12589237
133ac060
14291923
151d2771
hex15c20b

1425931 has 16 divisors (see below), whose sum is σ = 1693440. Its totient is φ = 1188000.

The previous prime is 1425929. The next prime is 1425953. The reversal of 1425931 is 1395241.

It is a 5-Lehmer number, since φ(1425931) divides (1425931-1)5.

It is a cyclic number.

It is not a de Polignac number, because 1425931 - 21 = 1425929 is a prime.

It is a super-2 number, since 2×14259312 = 4066558433522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 1425896 and 1425905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5556 + ... + 5806.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

21425931 is an apocalyptic number.

1425931 is a deficient number, since it is larger than the sum of its proper divisors (267509).

1425931 is a wasteful number, since it uses less digits than its factorization.

1425931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306.

The product of its digits is 1080, while the sum is 25.

The square root of 1425931 is about 1194.1235279484. The cubic root of 1425931 is about 112.5553571185. Note that the first 3 decimals are identical.

The spelling of 1425931 in words is "one million, four hundred twenty-five thousand, nine hundred thirty-one".

Divisors: 1 13 19 23 247 251 299 437 3263 4769 5681 5773 61997 75049 109687 1425931