42142030451 has 4 divisors (see below), whose sum is σ = 42212150904. Its totient is φ = 42071910000.

The previous prime is 42142030423. The next prime is 42142030487. The reversal of 42142030451 is 15403024124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42142030451 - 2³⁴ = 24962161267 is a prime.

It is a super-2 number, since 2×42142030451² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42142030451.

It is not an unprimeable number, because it can be changed into a prime (42142050451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35059325 + ... + 35060526.

It is an arithmetic number, because the mean of its divisors is an integer number (10553037726).

Almost surely, 2^42142030451 is an apocalyptic number.

42142030451 is a deficient number, since it is larger than the sum of its proper divisors (70120453).

42142030451 is an equidigital number, since it uses as much as digits as its factorization.

42142030451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70120452.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 42142030451 its reverse (15403024124), we get a palindrome (57545054575).

The spelling of 42142030451 in words is "forty-two billion, one hundred forty-two million, thirty thousand, four hundred fifty-one".