42220251550402 has 4 divisors (see below), whose sum is σ = 63330377325606. Its totient is φ = 21110125775200.

The previous prime is 42220251550397. The next prime is 42220251550423. The reversal of 42220251550402 is 20405515202224.

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., 36948539117961 + 5271712432441 = 6078531^2 + 2296021^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555062887599 + ... + 10555062887602.

Almost surely, 2^{42220251550402} is an apocalyptic number.

42220251550402 is a deficient number, since it is larger than the sum of its proper divisors (21110125775204).

42220251550402 is a wasteful number, since it uses less digits than its factorization.

42220251550402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21110125775203.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 42220251550402 its reverse (20405515202224), we get a palindrome (62625766752626).

The spelling of 42220251550402 in words is "forty-two trillion, two hundred twenty billion, two hundred fifty-one million, five hundred fifty thousand, four hundred two".