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1942957 = 3735209
BaseRepresentation
bin111011010010110101101
310122201020101
413122112231
5444133312
6105351101
722341412
oct7322655
93581211
101942957
111107855
12798491
135304a3
14388109
15285a57

1942957 has 4 divisors (see below), whose sum is σ = 1948540. Its totient is φ = 1937376.

The previous prime is 1942943. The next prime is 1942961. The reversal of 1942957 is 7592491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7592491 = 35921149.

It can be written as a sum of positive squares in 2 ways, for example, as 1590121 + 352836 = 1261^2 + 594^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1942957 is a prime.

It is a deceptive number, since it divides R1942956.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2232 + ... + 2977.

It is an arithmetic number, because the mean of its divisors is an integer number (487135).

21942957 is an apocalyptic number.

It is an amenable number.

1942957 is a deficient number, since it is larger than the sum of its proper divisors (5583).

1942957 is an equidigital number, since it uses as much as digits as its factorization.

1942957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582.

The product of its digits is 22680, while the sum is 37.

The square root of 1942957 is about 1393.8999246718. The cubic root of 1942957 is about 124.7827051491.

The spelling of 1942957 in words is "one million, nine hundred forty-two thousand, nine hundred fifty-seven".

Divisors: 1 373 5209 1942957