42001444402 has 4 divisors (see below), whose sum is σ = 63002166606. Its totient is φ = 21000722200.

The previous prime is 42001444367. The next prime is 42001444423. The reversal of 42001444402 is 20444410024.

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

It can be written as a sum of positive squares in only one way, i.e., 38087815921 + 3913628481 = 195161^2 + 62559^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500361099 + ... + 10500361102.

Almost surely, 2^42001444402 is an apocalyptic number.

42001444402 is a deficient number, since it is larger than the sum of its proper divisors (21000722204).

42001444402 is a wasteful number, since it uses less digits than its factorization.

42001444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21000722203.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 42001444402 its reverse (20444410024), we get a palindrome (62445854426).

The spelling of 42001444402 in words is "forty-two billion, one million, four hundred forty-four thousand, four hundred two".