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131443042 = 2131501691
BaseRepresentation
bin1111101010110…
…10100101100010
3100011022222221211
413311122211202
5232122134132
621013140334
73154150603
oct765324542
9304288854
10131443042
1168218115
123802a6aa
1321302563
1413657daa
15b816147
hex7d5a962

131443042 has 8 divisors (see below), whose sum is σ = 198670032. Its totient is φ = 65219700.

The previous prime is 131443027. The next prime is 131443057. The reversal of 131443042 is 240344131.

It is an interprime number because it is at equal distance from previous prime (131443027) and next prime (131443057).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250584 + ... + 251107.

It is an arithmetic number, because the mean of its divisors is an integer number (24833754).

Almost surely, 2131443042 is an apocalyptic number.

131443042 is a deficient number, since it is larger than the sum of its proper divisors (67226990).

131443042 is a wasteful number, since it uses less digits than its factorization.

131443042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501824.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 131443042 is about 11464.8611853786. The cubic root of 131443042 is about 508.4472083381.

Adding to 131443042 its reverse (240344131), we get a palindrome (371787173).

The spelling of 131443042 in words is "one hundred thirty-one million, four hundred forty-three thousand, forty-two".

Divisors: 1 2 131 262 501691 1003382 65721521 131443042