1521142014 has 64 divisors (see below), whose sum is σ = 3875212800. Its totient is φ = 387514368.

The previous prime is 1521142013. The next prime is 1521142019. The reversal of 1521142014 is 4102411251.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521142013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42499 + ... + 69630.

It is an arithmetic number, because the mean of its divisors is an integer number (60550200).

Almost surely, 2^1521142014 is an apocalyptic number.

1521142014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1521142014 is an abundant number, since it is smaller than the sum of its proper divisors (2354070786).

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

1521142014 is a wasteful number, since it uses less digits than its factorization.

1521142014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112177.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1521142014 is about 39001.8206498107. The cubic root of 1521142014 is about 1150.0672963769.

Adding to 1521142014 its reverse (4102411251), we get a palindrome (5623553265).

The spelling of 1521142014 in words is "one billion, five hundred twenty-one million, one hundred forty-two thousand, fourteen".