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30310042 = 277130493
BaseRepresentation
bin111001110011…
…1111010011010
32010000220120011
41303213322122
530224410132
63001352134
7515426320
oct163477232
963026504
1030310042
1116122424
12a19864a
136383149
14404dd10
1529dab47
hex1ce7e9a

30310042 has 16 divisors (see below), whose sum is σ = 52693632. Its totient is φ = 12806640.

The previous prime is 30310039. The next prime is 30310043. The reversal of 30310042 is 24001303.

It is not an unprimeable number, because it can be changed into a prime (30310043) 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, 14253 + ... + 16240.

It is an arithmetic number, because the mean of its divisors is an integer number (3293352).

Almost surely, 230310042 is an apocalyptic number.

30310042 is a deficient number, since it is larger than the sum of its proper divisors (22383590).

30310042 is a wasteful number, since it uses less digits than its factorization.

30310042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30573.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30310042 is about 5505.4556577998. The cubic root of 30310042 is about 311.7899981198.

Adding to 30310042 its reverse (24001303), we get a palindrome (54311345).

The spelling of 30310042 in words is "thirty million, three hundred ten thousand, forty-two".

Divisors: 1 2 7 14 71 142 497 994 30493 60986 213451 426902 2165003 4330006 15155021 30310042