1145542470021 has 24 divisors (see below), whose sum is σ = 1690745631744. Its totient is φ = 747062503200.

The previous prime is 1145542470011. The next prime is 1145542470029. The reversal of 1145542470021 is 1200742455411.

1145542470021 is a `hidden beast` number, since 1 + 1 + 45 + 542 + 4 + 70 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 1145542470021 - 2⁶ = 1145542469957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145542470029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131235 + ... + 1519311.

It is an arithmetic number, because the mean of its divisors is an integer number (70447734656).

Almost surely, 2^{1145542470021} is an apocalyptic number.

It is an amenable number.

1145542470021 is a deficient number, since it is larger than the sum of its proper divisors (545203161723).

1145542470021 is a wasteful number, since it uses less digits than its factorization.

1145542470021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390081 (or 1390078 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The spelling of 1145542470021 in words is "one trillion, one hundred forty-five billion, five hundred forty-two million, four hundred seventy thousand, twenty-one".