42051090 has 16 divisors (see below), whose sum is σ = 100922688. Its totient is φ = 11213616.

The previous prime is 42051083. The next prime is 42051091. The reversal of 42051090 is 9015024.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42051091) 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, 700822 + ... + 700881.

It is an arithmetic number, because the mean of its divisors is an integer number (6307668).

Almost surely, 2^42051090 is an apocalyptic number.

42051090 is an abundant number, since it is smaller than the sum of its proper divisors (58871598).

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

42051090 is a wasteful number, since it uses less digits than its factorization.

42051090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401713.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 42051090 is about 6484.6811795184. The cubic root of 42051090 is about 347.7435519818.

The spelling of 42051090 in words is "forty-two million, fifty-one thousand, ninety".