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420124279 = 2338946957
BaseRepresentation
bin11001000010101…
…001011001110111
31002021112112011111
4121002221121313
51330022434104
6105404415451
713260666061
oct3102513167
91067475144
10420124279
111a6170653
12b8847587
1369069463
143db22731
1526d3b404
hex190a9677

420124279 has 8 divisors (see below), whose sum is σ = 439526880. Its totient is φ = 400816416.

The previous prime is 420124267. The next prime is 420124283. The reversal of 420124279 is 972421024.

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

It is a cyclic number.

It is not a de Polignac number, because 420124279 - 27 = 420124151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420124279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420124249) 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, 14532 + ... + 32425.

It is an arithmetic number, because the mean of its divisors is an integer number (54940860).

Almost surely, 2420124279 is an apocalyptic number.

420124279 is a deficient number, since it is larger than the sum of its proper divisors (19402601).

420124279 is a wasteful number, since it uses less digits than its factorization.

420124279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47369.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 420124279 is about 20496.9334047803. The cubic root of 420124279 is about 748.9610972764.

The spelling of 420124279 in words is "four hundred twenty million, one hundred twenty-four thousand, two hundred seventy-nine".

Divisors: 1 23 389 8947 46957 1080011 18266273 420124279