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42131095 = 579106661
BaseRepresentation
bin1010000010110…
…1111010010111
32221021110222221
42200231322113
541241143340
64103003211
71021052116
oct240557227
987243887
1042131095
1121866796
1212139507
138961856
145849c7d
153a7344a
hex282de97

42131095 has 8 divisors (see below), whose sum is σ = 51197760. Its totient is φ = 33277920.

The previous prime is 42131093. The next prime is 42131119. The reversal of 42131095 is 59013124.

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

It is not a de Polignac number, because 42131095 - 21 = 42131093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42131093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52936 + ... + 53725.

It is an arithmetic number, because the mean of its divisors is an integer number (6399720).

Almost surely, 242131095 is an apocalyptic number.

42131095 is a deficient number, since it is larger than the sum of its proper divisors (9066665).

42131095 is a wasteful number, since it uses less digits than its factorization.

42131095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106745.

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

The square root of 42131095 is about 6490.8470171465. The cubic root of 42131095 is about 347.9639473595.

The spelling of 42131095 in words is "forty-two million, one hundred thirty-one thousand, ninety-five".

Divisors: 1 5 79 395 106661 533305 8426219 42131095