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42130701 = 326017789
BaseRepresentation
bin1010000010110…
…1110100001101
32221021110110100
42200231310031
541241140301
64103001313
71021051014
oct240556415
987243410
1042130701
1121866468
1212139239
138961612
145849a7b
153a73286
hex282dd0d

42130701 has 12 divisors (see below), whose sum is σ = 60964540. Its totient is φ = 28036800.

The previous prime is 42130691. The next prime is 42130703. The reversal of 42130701 is 10703124.

It can be written as a sum of positive squares in 2 ways, for example, as 30536676 + 11594025 = 5526^2 + 3405^2 .

It is a de Polignac number, because none of the positive numbers 2k-42130701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1515 + ... + 9303.

Almost surely, 242130701 is an apocalyptic number.

It is an amenable number.

42130701 is a deficient number, since it is larger than the sum of its proper divisors (18833839).

42130701 is a wasteful number, since it uses less digits than its factorization.

42130701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8396 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 42130701 is about 6490.8166666453. The cubic root of 42130701 is about 347.9628626640.

Adding to 42130701 its reverse (10703124), we get a palindrome (52833825).

The spelling of 42130701 in words is "forty-two million, one hundred thirty thousand, seven hundred one".

Divisors: 1 3 9 601 1803 5409 7789 23367 70101 4681189 14043567 42130701