1521430542 has 48 divisors (see below), whose sum is σ = 3523691808. Its totient is φ = 473256960.

The previous prime is 1521430517. The next prime is 1521430543. The reversal of 1521430542 is 2450341251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521430543) 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, 27843 + ... + 61790.

It is an arithmetic number, because the mean of its divisors is an integer number (73410246).

Almost surely, 2^1521430542 is an apocalyptic number.

1521430542 is an abundant number, since it is smaller than the sum of its proper divisors (2002261266).

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

1521430542 is a wasteful number, since it uses less digits than its factorization.

1521430542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89705 (or 89702 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1521430542 is about 39005.5193786726. The cubic root of 1521430542 is about 1150.1400061427.

Adding to 1521430542 its reverse (2450341251), we get a palindrome (3971771793).

The spelling of 1521430542 in words is "one billion, five hundred twenty-one million, four hundred thirty thousand, five hundred forty-two".