210030140040042 has 32 divisors (see below), whose sum is σ = 480399290070912. Its totient is φ = 59967311621184.

The previous prime is 210030140039959. The next prime is 210030140040101. The reversal of 210030140040042 is 240040041030012.

It is a super-2 number, since 2×210030140040042² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720764033 + ... + 1720886084.

It is an arithmetic number, because the mean of its divisors is an integer number (15012477814716).

Almost surely, 2^{210030140040042} is an apocalyptic number.

210030140040042 is an abundant number, since it is smaller than the sum of its proper divisors (270369150030870).

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

210030140040042 is a wasteful number, since it uses less digits than its factorization.

210030140040042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441651582.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 210030140040042 its reverse (240040041030012), we get a palindrome (450070181070054).

The spelling of 210030140040042 in words is "two hundred ten trillion, thirty billion, one hundred forty million, forty thousand, forty-two".