242621106236421 has 64 divisors (see below), whose sum is σ = 378409142292480. Its totient is φ = 136635623055360.

The previous prime is 242621106236413. The next prime is 242621106236461. The reversal of 242621106236421 is 124632601126242.

It is not a de Polignac number, because 242621106236421 - 2³ = 242621106236413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242621106236461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1114381045 + ... + 1114598741.

It is an arithmetic number, because the mean of its divisors is an integer number (5912642848320).

Almost surely, 2^{242621106236421} is an apocalyptic number.

It is an amenable number.

242621106236421 is a deficient number, since it is larger than the sum of its proper divisors (135788036056059).

242621106236421 is a wasteful number, since it uses less digits than its factorization.

242621106236421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242954.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 242621106236421 in words is "two hundred forty-two trillion, six hundred twenty-one billion, one hundred six million, two hundred thirty-six thousand, four hundred twenty-one".