42620451 has 8 divisors (see below), whose sum is σ = 56862480. Its totient is φ = 28396032.

The previous prime is 42620447. The next prime is 42620467. The reversal of 42620451 is 15402624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42620451 - 2² = 42620447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42620471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3051 + ... + 9723.

It is an arithmetic number, because the mean of its divisors is an integer number (7107810).

Almost surely, 2^42620451 is an apocalyptic number.

42620451 is a deficient number, since it is larger than the sum of its proper divisors (14242029).

42620451 is a wasteful number, since it uses less digits than its factorization.

42620451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42620451 is about 6528.4340388795. The cubic root of 42620451 is about 349.3059743650.

It can be divided in two parts, 42620 and 451, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 42620451 in words is "forty-two million, six hundred twenty thousand, four hundred fifty-one".