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30100042 = 273895527
BaseRepresentation
bin111001011010…
…0101001001010
32002122020111101
41302310221022
530201200132
62553052014
7513563140
oct162645112
962566441
1030100042
1115a99675
12a0b700a
13630b69b
143dd7590
1529987e7
hex1cb4a4a

30100042 has 16 divisors (see below), whose sum is σ = 51742080. Its totient is φ = 12864528.

The previous prime is 30100019. The next prime is 30100051. The reversal of 30100042 is 24000103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683 + ... + 8209.

It is an arithmetic number, because the mean of its divisors is an integer number (3233880).

Almost surely, 230100042 is an apocalyptic number.

30100042 is a deficient number, since it is larger than the sum of its proper divisors (21642038).

30100042 is a wasteful number, since it uses less digits than its factorization.

30100042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5925.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 30100042 is about 5486.3505174205. The cubic root of 30100042 is about 311.0682604342.

Adding to 30100042 its reverse (24000103), we get a palindrome (54100145).

The spelling of 30100042 in words is "thirty million, one hundred thousand, forty-two".

Divisors: 1 2 7 14 389 778 2723 5446 5527 11054 38689 77378 2150003 4300006 15050021 30100042