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1030642139 is a prime number
BaseRepresentation
bin111101011011100…
…101100111011011
32122211100001020002
4331123211213123
54102321022024
6250134123215
734353212402
oct7533454733
92584301202
101030642139
1148985276a
122491b050b
131356a8527
149ac46639
15607356ae
hex3d6e59db

1030642139 has 2 divisors, whose sum is σ = 1030642140. Its totient is φ = 1030642138.

The previous prime is 1030642127. The next prime is 1030642157. The reversal of 1030642139 is 9312460301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1030642139 - 28 = 1030641883 is a prime.

It is not a weakly prime, because it can be changed into another prime (1030642199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515321069 + 515321070.

It is an arithmetic number, because the mean of its divisors is an integer number (515321070).

Almost surely, 21030642139 is an apocalyptic number.

1030642139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030642139 is an equidigital number, since it uses as much as digits as its factorization.

1030642139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 1030642139 is about 32103.6156686439. The cubic root of 1030642139 is about 1010.1114601039. Note that the first 3 decimals are identical.

The spelling of 1030642139 in words is "one billion, thirty million, six hundred forty-two thousand, one hundred thirty-nine".