1642432 has 28 divisors (see below), whose sum is σ = 3557016. Its totient is φ = 746240.

The previous prime is 1642423. The next prime is 1642441. The reversal of 1642432 is 2342461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1642423) and next prime (1642441).

It is a super-3 number, since 3×1642432³ = 13291789307803336704, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 1870.

2^1642432 is an apocalyptic number.

It is an amenable number.

1642432 is an abundant number, since it is smaller than the sum of its proper divisors (1914584).

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

1642432 is a wasteful number, since it uses less digits than its factorization.

1642432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2346 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 1642432 is about 1281.5740321963. The cubic root of 1642432 is about 117.9856345626.

Adding to 1642432 its reverse (2342461), we get a palindrome (3984893).

The spelling of 1642432 in words is "one million, six hundred forty-two thousand, four hundred thirty-two".