1642470 has 32 divisors (see below), whose sum is σ = 4020192. Its totient is φ = 429312.

The previous prime is 1642463. The next prime is 1642481. The reversal of 1642470 is 742461.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1642470.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074 + ... + 2106.

It is an arithmetic number, because the mean of its divisors is an integer number (125631).

2^1642470 is an apocalyptic number.

1642470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2010096).

1642470 is an abundant number, since it is smaller than the sum of its proper divisors (2377722).

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

1642470 is a wasteful number, since it uses less digits than its factorization.

1642470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1642470 is about 1281.5888576295. The cubic root of 1642470 is about 117.9865444774.

Subtracting from 1642470 its reverse (742461), we obtain a palindrome (900009).

It can be divided in two parts, 1642 and 470, that added together give a palindrome (2112).

The spelling of 1642470 in words is "one million, six hundred forty-two thousand, four hundred seventy".