42291970 has 16 divisors (see below), whose sum is σ = 87000768. Its totient is φ = 14500080.

The previous prime is 42291961. The next prime is 42291973. The reversal of 42291970 is 7919224.

It is a happy number.

It is a super-2 number, since 2×42291970² = 3577221452961800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42291973) 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, 302016 + ... + 302155.

It is an arithmetic number, because the mean of its divisors is an integer number (5437548).

Almost surely, 2^42291970 is an apocalyptic number.

42291970 is an abundant number, since it is smaller than the sum of its proper divisors (44708798).

42291970 is a wasteful number, since it uses less digits than its factorization.

42291970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604185.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 42291970 is about 6503.2276601700. The cubic root of 42291970 is about 348.4062778233.

The spelling of 42291970 in words is "forty-two million, two hundred ninety-one thousand, nine hundred seventy".