1542000020 has 48 divisors (see below), whose sum is σ = 3599261568. Its totient is φ = 550143360.

The previous prime is 1541999993. The next prime is 1542000023. The reversal of 1542000020 is 200002451.

It is a junction number, because it is equal to n+sod(n) for n = 1541999959 and 1542000004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542000023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54464 + ... + 77783.

It is an arithmetic number, because the mean of its divisors is an integer number (74984616).

Almost surely, 2^1542000020 is an apocalyptic number.

1542000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542000020 is an abundant number, since it is smaller than the sum of its proper divisors (2057261548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1542000020 is a wasteful number, since it uses less digits than its factorization.

1542000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132320 (or 132318 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 1542000020 is about 39268.3080868020. The cubic root of 1542000020 is about 1155.3000526011.

Adding to 1542000020 its reverse (200002451), we get a palindrome (1742002471).

The spelling of 1542000020 in words is "one billion, five hundred forty-two million, twenty", and thus it is an aban number.