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372142681 = 10121912
BaseRepresentation
bin10110001011100…
…111001001011001
3221221020210210021
4112023213021121
51230232031211
6100532150441
712136106041
oct2613471131
9857223707
10372142681
11181079339
12a4768421
135c139991
14375d2721
1522a0e771
hex162e7259

372142681 has 9 divisors (see below), whose sum is σ = 377841919. Its totient is φ = 366529000.

The previous prime is 372142669. The next prime is 372142709. The reversal of 372142681 is 186241273.

The square root of 372142681 is 19291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 357550281 + 14592400 = 18909^2 + 3820^2 .

It is not a de Polignac number, because 372142681 - 25 = 372142649 is a prime.

It is a super-2 number, since 2×3721426812 = 276980350043735522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (372142621) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1948296 + ... + 1948486.

Almost surely, 2372142681 is an apocalyptic number.

372142681 is the 19291-st square number.

372142681 is the 9646-th centered octagonal number.

It is an amenable number.

372142681 is a deficient number, since it is larger than the sum of its proper divisors (5699238).

372142681 is an frugal number, since it uses more digits than its factorization.

372142681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584 (or 292 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The cubic root of 372142681 is about 719.2885726090.

The spelling of 372142681 in words is "three hundred seventy-two million, one hundred forty-two thousand, six hundred eighty-one".

Divisors: 1 101 191 10201 19291 36481 1948391 3684581 372142681