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1421742 = 23733851
BaseRepresentation
bin101011011000110101110
32200020021010
411123012232
5330443432
650250050
715041010
oct5330656
92606233
101421742
118911a3
12586926
133aa18a
142901b0
151d13cc
hex15b1ae

1421742 has 16 divisors (see below), whose sum is σ = 3249792. Its totient is φ = 406200.

The previous prime is 1421741. The next prime is 1421747. The reversal of 1421742 is 2471241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16884 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

21421742 is an apocalyptic number.

1421742 is an abundant number, since it is smaller than the sum of its proper divisors (1828050).

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

1421742 is a wasteful number, since it uses less digits than its factorization.

1421742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33863.

The product of its digits is 448, while the sum is 21.

The square root of 1421742 is about 1192.3682317137. The cubic root of 1421742 is about 112.4450299349.

Adding to 1421742 its reverse (2471241), we get a palindrome (3892983).

The spelling of 1421742 in words is "one million, four hundred twenty-one thousand, seven hundred forty-two".

Divisors: 1 2 3 6 7 14 21 42 33851 67702 101553 203106 236957 473914 710871 1421742