42501951 has 12 divisors (see below), whose sum is σ = 61524112. Its totient is φ = 28273536.

The previous prime is 42501923. The next prime is 42501973. The reversal of 42501951 is 15910524.

42501951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42501951 - 2¹⁵ = 42469183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466 + ... + 9231.

Almost surely, 2^42501951 is an apocalyptic number.

42501951 is a deficient number, since it is larger than the sum of its proper divisors (19022161).

42501951 is a wasteful number, since it uses less digits than its factorization.

42501951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10190 (or 10187 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 42501951 is about 6519.3520383547. The cubic root of 42501951 is about 348.9819422900.

The spelling of 42501951 in words is "forty-two million, five hundred one thousand, nine hundred fifty-one".