1421929501 has 2 divisors, whose sum is σ = 1421929502. Its totient is φ = 1421929500.

The previous prime is 1421929433. The next prime is 1421929517. The reversal of 1421929501 is 1059291241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1365228601 + 56700900 = 36949^2 + 7530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421929501 - 2¹³ = 1421921309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421929541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710964750 + 710964751.

It is an arithmetic number, because the mean of its divisors is an integer number (710964751).

Almost surely, 2^1421929501 is an apocalyptic number.

It is an amenable number.

1421929501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421929501 is an equidigital number, since it uses as much as digits as its factorization.

1421929501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 1421929501 is about 37708.4804917939. The cubic root of 1421929501 is about 1124.4997284500.

The spelling of 1421929501 in words is "one billion, four hundred twenty-one million, nine hundred twenty-nine thousand, five hundred one".