1542089592481 has 9 divisors (see below), whose sum is σ = 1597136031673. Its totient is φ = 1488879318640.

The previous prime is 1542089592479. The next prime is 1542089592497. The reversal of 1542089592481 is 1842959802451.

The square root of 1542089592481 is 1241809.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 419591722081 + 1122497870400 = 647759^2 + 1059480^2 .

It is not a de Polignac number, because 1542089592481 - 2¹ = 1542089592479 is a prime.

It is a super-2 number, since 2×1542089592481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542089593481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35991051 + ... + 36033871.

Almost surely, 2^{1542089592481} is an apocalyptic number.

1542089592481 is the 1241809-th square number.

1542089592481 is the 620905-th centered octagonal number.

It is an amenable number.

1542089592481 is a deficient number, since it is larger than the sum of its proper divisors (55046439192).

1542089592481 is an frugal number, since it uses more digits than its factorization.

1542089592481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85700 (or 42850 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 58.

The spelling of 1542089592481 in words is "one trillion, five hundred forty-two billion, eighty-nine million, five hundred ninety-two thousand, four hundred eighty-one".