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1219061 is a prime number
BaseRepresentation
bin100101001100111110101
32021221020102
410221213311
5303002221
642043445
713235054
oct4514765
92257212
101219061
11762998
124a9585
13338b4c
1423a39b
1519130b
hex1299f5

1219061 has 2 divisors, whose sum is σ = 1219062. Its totient is φ = 1219060.

The previous prime is 1219003. The next prime is 1219081. The reversal of 1219061 is 1609121.

It is an a-pointer prime, because the next prime (1219081) can be obtained adding 1219061 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1012036 + 207025 = 1006^2 + 455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1219061 is a prime.

It is a super-2 number, since 2×12190612 = 2972219443442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609530 + 609531.

It is an arithmetic number, because the mean of its divisors is an integer number (609531).

21219061 is an apocalyptic number.

It is an amenable number.

1219061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219061 is an equidigital number, since it uses as much as digits as its factorization.

1219061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1219061 is about 1104.1109545693. The cubic root of 1219061 is about 106.8255520601.

It can be divided in two parts, 12190 and 61, that multiplied together give a triangular number (743590 = T1219).

The spelling of 1219061 in words is "one million, two hundred nineteen thousand, sixty-one".