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1403442 = 23277969
BaseRepresentation
bin101010110101000110010
32122022011100
411112220302
5324402232
650025230
714633445
oct5265062
92568140
101403442
11879477
12578216
133a1a51
1428765c
151cac7c
hex156a32

1403442 has 12 divisors (see below), whose sum is σ = 3040830. Its totient is φ = 467808.

The previous prime is 1403429. The next prime is 1403443. The reversal of 1403442 is 2443041.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 281961 = 1059^2 + 531^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 77969 = 1403442 / (1 + 4 + 0 + 3 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (1403443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38967 + ... + 39002.

21403442 is an apocalyptic number.

1403442 is an abundant number, since it is smaller than the sum of its proper divisors (1637388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1403442 is a wasteful number, since it uses less digits than its factorization.

1403442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77977 (or 77974 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1403442 is about 1184.6695741851. The cubic root of 1403442 is about 111.9604983996.

Adding to 1403442 its reverse (2443041), we get a palindrome (3846483).

The spelling of 1403442 in words is "one million, four hundred three thousand, four hundred forty-two".

Divisors: 1 2 3 6 9 18 77969 155938 233907 467814 701721 1403442