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25142042 = 213990439
BaseRepresentation
bin101111111101…
…0001100011010
31202022100101202
41133322030122
522414021132
62254514202
7423463262
oct137721432
952270352
1025142042
1113212652
128505962
135293a63
1434a67a2
152319762
hex17fa31a

25142042 has 8 divisors (see below), whose sum is σ = 37984800. Its totient is φ = 12480444.

The previous prime is 25142041. The next prime is 25142077. The reversal of 25142042 is 24024152.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (25142041) 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, 44942 + ... + 45497.

It is an arithmetic number, because the mean of its divisors is an integer number (4748100).

Almost surely, 225142042 is an apocalyptic number.

25142042 is a deficient number, since it is larger than the sum of its proper divisors (12842758).

25142042 is a wasteful number, since it uses less digits than its factorization.

25142042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90580.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 25142042 is about 5014.1840811841. The cubic root of 25142042 is about 292.9545060934.

Adding to 25142042 its reverse (24024152), we get a palindrome (49166194).

The spelling of 25142042 in words is "twenty-five million, one hundred forty-two thousand, forty-two".

Divisors: 1 2 139 278 90439 180878 12571021 25142042