42641004 has 24 divisors (see below), whose sum is σ = 113709568. Its totient is φ = 12183120.

The previous prime is 42640957. The next prime is 42641009. The reversal of 42641004 is 40014624.

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

It is not an unprimeable number, because it can be changed into a prime (42641009) 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, 253732 + ... + 253899.

Almost surely, 2^42641004 is an apocalyptic number.

It is an amenable number.

42641004 is an abundant number, since it is smaller than the sum of its proper divisors (71068564).

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

42641004 is a wasteful number, since it uses less digits than its factorization.

42641004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507645 (or 507643 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42641004 is about 6530.0079632417. The cubic root of 42641004 is about 349.3621143307.

Adding to 42641004 its reverse (40014624), we get a palindrome (82655628).

The spelling of 42641004 in words is "forty-two million, six hundred forty-one thousand, four".