1401542279 has 2 divisors, whose sum is σ = 1401542280. Its totient is φ = 1401542278.

The previous prime is 1401542173. The next prime is 1401542291. The reversal of 1401542279 is 9722451041.

It is a strong prime.

It is an emirp because it is prime and its reverse (9722451041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1401542279 - 2¹⁶ = 1401476743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401512279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700771139 + 700771140.

It is an arithmetic number, because the mean of its divisors is an integer number (700771140).

Almost surely, 2^1401542279 is an apocalyptic number.

1401542279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401542279 is an equidigital number, since it uses as much as digits as its factorization.

1401542279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1401542279 is about 37437.1777648903. The cubic root of 1401542279 is about 1119.0995842940.

The spelling of 1401542279 in words is "one billion, four hundred one million, five hundred forty-two thousand, two hundred seventy-nine".