1542761550 has 144 divisors (see below), whose sum is σ = 4544776080. Its totient is φ = 372096000.

The previous prime is 1542761527. The next prime is 1542761551. The reversal of 1542761550 is 551672451.

1542761550 is a `hidden beast` number, since 1 + 5 + 42 + 7 + 61 + 550 = 666.

It is a super-2 number, since 2×1542761550² = 4760226400316805000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542761551) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1132870 + ... + 1134230.

It is an arithmetic number, because the mean of its divisors is an integer number (31560945).

Almost surely, 2^1542761550 is an apocalyptic number.

1542761550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1542761550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2272388040).

1542761550 is an abundant number, since it is smaller than the sum of its proper divisors (3002014530).

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

1542761550 is a wasteful number, since it uses less digits than its factorization.

1542761550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 1542761550 is about 39278.0033861193. The cubic root of 1542761550 is about 1155.4902062643.

The spelling of 1542761550 in words is "one billion, five hundred forty-two million, seven hundred sixty-one thousand, five hundred fifty".