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1142903449 is a prime number
BaseRepresentation
bin100010000011111…
…0101001010011001
32221122120111210101
41010013311022121
54320040402244
6305224215401
740215343012
oct10407651231
92848514711
101142903449
11537159306
1227a90a561
13152a22c3c
14abb0a009
156a50d0d4
hex441f5299

1142903449 has 2 divisors, whose sum is σ = 1142903450. Its totient is φ = 1142903448.

The previous prime is 1142903417. The next prime is 1142903479. The reversal of 1142903449 is 9443092411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995718025 + 147185424 = 31555^2 + 12132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142903449 - 25 = 1142903417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142903479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571451724 + 571451725.

It is an arithmetic number, because the mean of its divisors is an integer number (571451725).

Almost surely, 21142903449 is an apocalyptic number.

It is an amenable number.

1142903449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142903449 is an equidigital number, since it uses as much as digits as its factorization.

1142903449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1142903449 is about 33806.8550592923. The cubic root of 1142903449 is about 1045.5300376531.

The spelling of 1142903449 in words is "one billion, one hundred forty-two million, nine hundred three thousand, four hundred forty-nine".