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30042659 = 57752067
BaseRepresentation
bin111001010011…
…0101000100011
32002112022210002
41302212220203
530142331114
62551530215
7513233633
oct162465043
962468702
1030042659
1115a5a549
12a08996b
1362bb52a
143dc06c3
1529867de
hex1ca6a23

30042659 has 4 divisors (see below), whose sum is σ = 30095304. Its totient is φ = 29990016.

The previous prime is 30042643. The next prime is 30042671. The reversal of 30042659 is 95624003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95624003 = 891074427.

It is a cyclic number.

It is not a de Polignac number, because 30042659 - 24 = 30042643 is a prime.

It is a super-2 number, since 2×300426592 = 1805122719580562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30042619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25457 + ... + 26610.

It is an arithmetic number, because the mean of its divisors is an integer number (7523826).

Almost surely, 230042659 is an apocalyptic number.

30042659 is a deficient number, since it is larger than the sum of its proper divisors (52645).

30042659 is an equidigital number, since it uses as much as digits as its factorization.

30042659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52644.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 30042659 is about 5481.1184077704. The cubic root of 30042659 is about 310.8704602100.

The spelling of 30042659 in words is "thirty million, forty-two thousand, six hundred fifty-nine".

Divisors: 1 577 52067 30042659