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10154242421 is a prime number
BaseRepresentation
bin10010111010011110…
…10111000101110101
3222012122222221221122
421131033113011311
5131243441224141
64355332353325
7506426431211
oct113517270565
928178887848
1010154242421
114340894694
121b74775845
13c5a94338b
146c4833941
153e66c964b
hex25d3d7175

10154242421 has 2 divisors, whose sum is σ = 10154242422. Its totient is φ = 10154242420.

The previous prime is 10154242391. The next prime is 10154242471. The reversal of 10154242421 is 12424245101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9620863396 + 533379025 = 98086^2 + 23095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10154242421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10154242471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5077121210 + 5077121211.

It is an arithmetic number, because the mean of its divisors is an integer number (5077121211).

Almost surely, 210154242421 is an apocalyptic number.

It is an amenable number.

10154242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10154242421 is an equidigital number, since it uses as much as digits as its factorization.

10154242421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 10154242421 its reverse (12424245101), we get a palindrome (22578487522).

The spelling of 10154242421 in words is "ten billion, one hundred fifty-four million, two hundred forty-two thousand, four hundred twenty-one".