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135331442 = 289760289
BaseRepresentation
bin10000001000011…
…11111001110010
3100102122112211122
420010033321302
5234121101232
621232342242
73232204211
oct1004177162
9312575748
10135331442
116a433574
12393a4982
132206439c
1413d8b078
15bd33312
hex810fe72

135331442 has 8 divisors (see below), whose sum is σ = 205278300. Its totient is φ = 66905344.

The previous prime is 135331423. The next prime is 135331451. The reversal of 135331442 is 244133531.

It can be written as a sum of positive squares in 2 ways, for example, as 98982601 + 36348841 = 9949^2 + 6029^2 .

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, 379967 + ... + 380322.

Almost surely, 2135331442 is an apocalyptic number.

135331442 is a deficient number, since it is larger than the sum of its proper divisors (69946858).

135331442 is an equidigital number, since it uses as much as digits as its factorization.

135331442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760380.

The product of its digits is 4320, while the sum is 26.

The square root of 135331442 is about 11633.2042877274. The cubic root of 135331442 is about 513.4122615280.

Adding to 135331442 its reverse (244133531), we get a palindrome (379464973).

The spelling of 135331442 in words is "one hundred thirty-five million, three hundred thirty-one thousand, four hundred forty-two".

Divisors: 1 2 89 178 760289 1520578 67665721 135331442