Search a number
7420764541 is a prime number
BaseRepresentation
bin1101110100100111…
…11110000101111101
3201011011110220020011
412322103332011331
5110144203431131
63224204423221
7351615313021
oct67223760575
921134426204
107420764541
113168912263
121531247b11
13913537948
145057a8381
152d67300b1
hex1ba4fe17d

7420764541 has 2 divisors, whose sum is σ = 7420764542. Its totient is φ = 7420764540.

The previous prime is 7420764539. The next prime is 7420764577. The reversal of 7420764541 is 1454670247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7266880516 + 153884025 = 85246^2 + 12405^2 .

It is a cyclic number.

It is not a de Polignac number, because 7420764541 - 21 = 7420764539 is a prime.

Together with 7420764539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 7420764494 and 7420764503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7420764521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710382270 + 3710382271.

It is an arithmetic number, because the mean of its divisors is an integer number (3710382271).

Almost surely, 27420764541 is an apocalyptic number.

It is an amenable number.

7420764541 is a deficient number, since it is larger than the sum of its proper divisors (1).

7420764541 is an equidigital number, since it uses as much as digits as its factorization.

7420764541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 7420764541 is about 86143.8595664253. The cubic root of 7420764541 is about 1950.5161501081.

The spelling of 7420764541 in words is "seven billion, four hundred twenty million, seven hundred sixty-four thousand, five hundred forty-one".