30042142253643 has 24 divisors (see below), whose sum is σ = 44546736470448. Its totient is φ = 17987810735232.

The previous prime is 30042142253621. The next prime is 30042142253653. The reversal of 30042142253643 is 34635224124003.

It is not a de Polignac number, because 30042142253643 - 2⁶ = 30042142253579 is a prime.

It is a super-2 number, since 2×30042142253643² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (30042142253653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 800720680 + ... + 800758197.

It is an arithmetic number, because the mean of its divisors is an integer number (1856114019602).

Almost surely, 2^{30042142253643} is an apocalyptic number.

30042142253643 is a deficient number, since it is larger than the sum of its proper divisors (14504594216805).

30042142253643 is a wasteful number, since it uses less digits than its factorization.

30042142253643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601478943 (or 1601478930 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

Adding to 30042142253643 its reverse (34635224124003), we get a palindrome (64677366377646).

The spelling of 30042142253643 in words is "thirty trillion, forty-two billion, one hundred forty-two million, two hundred fifty-three thousand, six hundred forty-three".