1545420131 has 2 divisors, whose sum is σ = 1545420132. Its totient is φ = 1545420130.

The previous prime is 1545420101. The next prime is 1545420167. The reversal of 1545420131 is 1310245451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1545420131 - 2²² = 1541225827 is a prime.

It is a super-2 number, since 2×1545420131² = 4776646762600114322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1545420131.

It is not a weakly prime, because it can be changed into another prime (1545420101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772710065 + 772710066.

It is an arithmetic number, because the mean of its divisors is an integer number (772710066).

Almost surely, 2^1545420131 is an apocalyptic number.

1545420131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1545420131 is an equidigital number, since it uses as much as digits as its factorization.

1545420131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1545420131 is about 39311.8319466290. The cubic root of 1545420131 is about 1156.1535624813.

Adding to 1545420131 its reverse (1310245451), we get a palindrome (2855665582).

The spelling of 1545420131 in words is "one billion, five hundred forty-five million, four hundred twenty thousand, one hundred thirty-one".