1421534017442 has 16 divisors (see below), whose sum is σ = 2658453227712. Its totient is φ = 553844422320.

The previous prime is 1421534017429. The next prime is 1421534017447. The reversal of 1421534017442 is 2447104351241.

It is a junction number, because it is equal to n+sod(n) for n = 1421534017396 and 1421534017405.

It is not an unprimeable number, because it can be changed into a prime (1421534017447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4615370033 + ... + 4615370340.

It is an arithmetic number, because the mean of its divisors is an integer number (166153326732).

Almost surely, 2^{1421534017442} is an apocalyptic number.

1421534017442 is a deficient number, since it is larger than the sum of its proper divisors (1236919210270).

1421534017442 is a wasteful number, since it uses less digits than its factorization.

1421534017442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230740393.

The product of its (nonzero) digits is 107520, while the sum is 38.

Adding to 1421534017442 its reverse (2447104351241), we get a palindrome (3868638368683).

The spelling of 1421534017442 in words is "one trillion, four hundred twenty-one billion, five hundred thirty-four million, seventeen thousand, four hundred forty-two".