642629043 has 12 divisors (see below), whose sum is σ = 1060848048. Its totient is φ = 367216560.

The previous prime is 642629041. The next prime is 642629069. The reversal of 642629043 is 340926246.

642629043 is a `hidden beast` number, since 642 + 6 + 2 + 9 + 0 + 4 + 3 = 666.

It is not a de Polignac number, because 642629043 - 2¹ = 642629041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 642628989 and 642629007.

It is not an unprimeable number, because it can be changed into a prime (642629041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5100168 + ... + 5100293.

It is an arithmetic number, because the mean of its divisors is an integer number (88404004).

Almost surely, 2^642629043 is an apocalyptic number.

642629043 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

642629043 is a deficient number, since it is larger than the sum of its proper divisors (418219005).

642629043 is a wasteful number, since it uses less digits than its factorization.

642629043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200474 (or 10200471 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 642629043 is about 25350.1290529259. The cubic root of 642629043 is about 862.9522850287.

The spelling of 642629043 in words is "six hundred forty-two million, six hundred twenty-nine thousand, forty-three".