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254021042 = 21111546411
BaseRepresentation
bin11110010010000…
…00110110110010
3122200222121100202
433021000312302
51010012133132
641112315202
76203100062
oct1711006662
9580877322
10254021042
1112042a850
12710a2b02
134081ca12
1425a453a2
151747a762
hexf240db2

254021042 has 8 divisors (see below), whose sum is σ = 415670832. Its totient is φ = 115464100.

The previous prime is 254020999. The next prime is 254021057. The reversal of 254021042 is 240120452.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5773184 + ... + 5773227.

It is an arithmetic number, because the mean of its divisors is an integer number (51958854).

Almost surely, 2254021042 is an apocalyptic number.

254021042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

254021042 is a deficient number, since it is larger than the sum of its proper divisors (161649790).

254021042 is a wasteful number, since it uses less digits than its factorization.

254021042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11546424.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 254021042 is about 15938.0375830903. The cubic root of 254021042 is about 633.3200407798.

Adding to 254021042 its reverse (240120452), we get a palindrome (494141494).

The spelling of 254021042 in words is "two hundred fifty-four million, twenty-one thousand, forty-two".

Divisors: 1 2 11 22 11546411 23092822 127010521 254021042