42105021251152 has 10 divisors (see below), whose sum is σ = 81578478674138. Its totient is φ = 21052510625568.

The previous prime is 42105021251093. The next prime is 42105021251191. The reversal of 42105021251152 is 25115212050124.

It can be written as a sum of positive squares in only one way, i.e., 41351638914576 + 753382336576 = 6430524^2 + 867976^2 .

It is a super-2 number, since 2×42105021251152² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1315781914083 + ... + 1315781914114.

Almost surely, 2^{42105021251152} is an apocalyptic number.

It is an amenable number.

42105021251152 is a deficient number, since it is larger than the sum of its proper divisors (39473457422986).

42105021251152 is a wasteful number, since it uses less digits than its factorization.

42105021251152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631563828205 (or 2631563828199 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 31.

The spelling of 42105021251152 in words is "forty-two trillion, one hundred five billion, twenty-one million, two hundred fifty-one thousand, one hundred fifty-two".